foo.cc: In function 'int main()':
foo.cc:7:13: error: no match for 'operator>>' (operand types are 'std::basic_ostream<char>::__ostream_type' {aka 'std::basic_ostream<char>'} and 'std::_Setprecision')
7 | cout<<fixed>>setprecision(7)<<(a*x*3+b*x*2+c*x+d)*1.0;
| ~~~~~~~~~~~^~~~~~~~~~~~~~~~~
| | |
| | std::_Setprecision
| std::basic_ostream<char>::__ostream_type {aka std::basic_ostream<char>}
In file included from /usr/include/c++/9/string:56,
from /usr/include/c++/9/bits/locale_classes.h:40,
from /usr/include/c++/9/bits/ios_base.h:41,
from /usr/include/c++/9/ios:42,
from /usr/include/c++/9/istream:38,
from /usr/include/c++/9/sstream:38,
from /usr/include/c++/9/complex:45,
from /usr/include/c++/9/ccomplex:39,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:54,
from foo.cc:1:
/usr/include/c++/9/bits/basic_string.tcc:1466:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&)'
1466 | operator>>(basic_istream<_CharT, _Traits>& __in,
| ^~~~~~~~
/usr/include/c++/9/bits/basic_string.tcc:1466:5: note: template argument deduction/substitution failed:
foo.cc:7:29: note: 'std::basic_ostream<char>::__ostream_type' {aka 'std::basic_ostream<char>'} is not derived from 'std::basic_istream<_CharT, _Traits>'
7 | cout<<fixed>>setprecision(7)<<(a*x*3+b*x*2+c*x+d)*1.0;
| ^
In file included from /usr/include/c++/9/istream:991,
from /usr/include/c++/9/sstream:38,
from /usr/include/c++/9/complex:45,
from /usr/include/c++/9/ccomplex:39,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:54,
from foo.cc:1:
/usr/include/c++/9/bits/istream.tcc:931:5: note: candidate: 'template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, _CharT&)'
931 | operator>>(basic_istream<_CharT, _Traits>& __in, _CharT& __c)
| ^~~~~~~~
/usr/include/c++/9/bits/istream.tcc:931:5: note: template argument deduction/substitution failed:
foo.cc:7:29: note: 'std::basic_ostream<char>::__ostream_type' {aka 'std::basic_ostream<char>'} is not derived from 'std::basic_istream<_CharT, _Traits>'
7 | cout<<fixed>>setprecision(7)<<(a*x*3+b*x*2+c*x+d)*1.0;
| ^
In file included from /usr/include/c++/9/sstream:38,
from /usr/include/c++/9/complex:45,
from /usr/include/c++/9/ccomplex:39,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:54,
from foo.cc:1:
/usr/include/c++/9/istream:756:5: note: candidate: 'template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(std::basic_istream<char, _Traits>&, unsigned char&)'
756 | operator>>(basic_istream<char, _Traits>& __in, unsigned char& __c)
| ^~~~~~~~
/usr/include/c++/9/istream:756:5: note: template argument deduction/substitution failed:
foo.cc:7:29: note: 'std::basic_ostream<char>::__ostream_type' {aka 'std::basic_ostream<char>'} is not derived from 'std::basic_istream<char, _Traits>'
7 | cout<<fixed>>setprecision(7)<<(a*x*3+b*x*2+c*x+d)*1.0;
| ^
In file included from /usr/include/c++/9/sstream:38,
from /usr/include/c++/9/complex:45,
from /usr/include/c++/9/ccomplex:39,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:54,
from foo.cc:1:
/usr/include/c++/9/istream:761:5: note: candidate: 'template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(std::basic_istream<char, _Traits>&, signed char&)'
761 | operator>>(basic_istream<char, _Traits>& __in, signed char& __c)
| ^~~~~~~~
/usr/include/c++/9/istream:761:5: note: template argument deduction/substitution failed:
foo.cc:7:29: note: 'std::basic_ostream<char>::__ostream_type' {aka 'std::basic_ostream<char>'} is not derived from 'std::basic_istream<char, _Traits>'
7 | cout<<fixed>>setprecision(7)<<(a*x*3+b*x*2+c*x+d)*1.0;
| ^
In file included from /usr/include/c++/9/istream:991,
from /usr/include/c++/9/sstream:38,
from /usr/include/c++/9/complex:45,
from /usr/include/c++/9/ccomplex:39,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:54,
from foo.cc:1:
/usr/include/c++/9/bits/istream.tcc:963:5: note: candidate: 'template<class _CharT2, class _Traits2> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, _CharT2*)'
963 | operator>>(basic_istream<_CharT, _Traits>& __in, _CharT* __s)
| ^~~~~~~~
/usr/include/c++/9/bits/istream.tcc:963:5: note: template argument deduction/substitution failed:
foo.cc:7:29: note: 'std::basic_ostream<char>::__ostream_type' {aka 'std::basic_ostream<char>'} is not derived from 'std::basic_istream<_CharT, _Traits>'
7 | cout<<fixed>>setprecision(7)<<(a*x*3+b*x*2+c*x+d)*1.0;
| ^
In file included from /usr/include/c++/9/sstream:38,
from /usr/include/c++/9/complex:45,
from /usr/include/c++/9/ccomplex:39,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:54,
from foo.cc:1:
/usr/include/c++/9/istream:803:5: note: candidate: 'template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(std::basic_istream<char, _Traits>&, unsigned char*)'
803 | operator>>(basic_istream<char, _Traits>& __in, unsigned char* __s)
| ^~~~~~~~
/usr/include/c++/9/istream:803:5: note: template argument deduction/substitution failed:
foo.cc:7:29: note: 'std::basic_ostream<char>::__ostream_type' {aka 'std::basic_ostream<char>'} is not derived from 'std::basic_istream<char, _Traits>'
7 | cout<<fixed>>setprecision(7)<<(a*x*3+b*x*2+c*x+d)*1.0;
| ^
In file included from /usr/include/c++/9/sstream:38,
from /usr/include/c++/9/complex:45,
from /usr/include/c++/9/ccomplex:39,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:54,
from foo.cc:1:
/usr/include/c++/9/istream:808:5: note: candidate: 'template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(std::basic_istream<char, _Traits>&, signed char*)'
808 | operator>>(basic_istream<char, _Traits>& __in, signed char* __s)
| ^~~~~~~~
/usr/include/c++/9/istream:808:5: note: template argument deduction/substitution failed:
foo.cc:7:29: note: 'std::basic_ostream<char>::__ostream_type' {aka 'std::basic_ostream<char>'} is not derived from 'std::basic_istream<char, _Traits>'
7 | cout<<fixed>>setprecision(7)<<(a*x*3+b*x*2+c*x+d)*1.0;
| ^
In file included from /usr/include/c++/9/sstream:38,
from /usr/include/c++/9/complex:45,
from /usr/include/c++/9/ccomplex:39,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:54,
from foo.cc:1:
/usr/include/c++/9/istream:980:5: note: candidate: 'template<class _Istream, class _Tp> typename std::enable_if<std::__and_<std::__not_<std::is_lvalue_reference<_Tp> >, std::__is_convertible_to_basic_istream<_Istream>, std::__is_extractable<typename std::__is_convertible_to_basic_istream<_Tp>::__istream_type, _Tp&&, void> >::value, typename std::__is_convertible_to_basic_istream<_Tp>::__istream_type>::type std::operator>>(_Istream&&, _Tp&&)'
980 | operator>>(_Istream&& __is, _Tp&& __x)
| ^~~~~~~~
/usr/include/c++/9/istream:980:5: note: template argument deduction/substitution failed:
/usr/include/c++/9/istream: In substitution of 'template<class _Istream, class _Tp> typename std::enable_if<std::__and_<std::__not_<std::is_lvalue_reference<_Tp> >, std::__is_convertible_to_basic_istream<_Istream>, std::__is_extractable<typename std::__is_convertible_to_basic_istream<_Tp>::__istream_type, _Tp&&, void> >::value, typename std::__is_convertible_to_basic_istream<_Tp>::__istream_type>::type std::operator>>(_Istream&&, _Tp&&) [with _Istream = std::basic_ostream<char>&; _Tp = std::_Setprecision]':
foo.cc:7:29: required from here
/usr/include/c++/9/istream:980:5: error: no type named 'type' in 'struct std::enable_if<false, void>'
In file included from /usr/include/c++/9/ccomplex:39,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:54,
from foo.cc:1:
/usr/include/c++/9/complex:498:5: note: candidate: 'template<class _Tp, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::complex<_Tp>&)'
498 | operator>>(basic_istream<_CharT, _Traits>& __is, complex<_Tp>& __x)
| ^~~~~~~~
/usr/include/c++/9/complex:498:5: note: template argument deduction/substitution failed:
foo.cc:7:29: note: 'std::basic_ostream<char>::__ostream_type' {aka 'std::basic_ostream<char>'} is not derived from 'std::basic_istream<_CharT, _Traits>'
7 | cout<<fixed>>setprecision(7)<<(a*x*3+b*x*2+c*x+d)*1.0;
| ^
In file included from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:66,
from foo.cc:1:
/usr/include/c++/9/bitset:1470:5: note: candidate: 'template<class _CharT, class _Traits, long unsigned int _Nb> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::bitset<_Nb>&)'
1470 | operator>>(std::basic_istream<_CharT, _Traits>& __is, bitset<_Nb>& __x)
| ^~~~~~~~
/usr/include/c++/9/bitset:1470:5: note: template argument deduction/substitution failed:
foo.cc:7:29: note: 'std::basic_ostream<char>::__ostream_type' {aka 'std::basic_ostream<char>'} is not derived from 'std::basic_istream<_CharT, _Traits>'
7 | cout<<fixed>>setprecision(7)<<(a*x*3+b*x*2+c*x+d)*1.0;
| ^
In file included from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:72,
from foo.cc:1:
/usr/include/c++/9/iomanip:71:5: note: candidate: 'template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::_Resetiosflags)'
71 | operator>>(basic_istream<_CharT, _Traits>& __is, _Resetiosflags __f)
| ^~~~~~~~
/usr/include/c++/9/iomanip:71:5: note: template argument deduction/substitution failed:
foo.cc:7:29: note: 'std::basic_ostream<char>::__ostream_type' {aka 'std::basic_ostream<char>'} is not derived from 'std::basic_istream<_CharT, _Traits>'
7 | cout<<fixed>>setprecision(7)<<(a*x*3+b*x*2+c*x+d)*1.0;
| ^
In file included from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:72,
from foo.cc:1:
/usr/include/c++/9/iomanip:101:5: note: candidate: 'template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::_Setiosflags)'
101 | operator>>(basic_istream<_CharT, _Traits>& __is, _Setiosflags __f)
| ^~~~~~~~
/usr/include/c++/9/iomanip:101:5: note: template argument deduction/substitution failed:
foo.cc:7:29: note: 'std::basic_ostream<char>::__ostream_type' {aka 'std::basic_ostream<char>'} is not derived from 'std::basic_istream<_CharT, _Traits>'
7 | cout<<fixed>>setprecision(7)<<(a*x*3+b*x*2+c*x+d)*1.0;
| ^
In file included from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:72,
from foo.cc:1:
/usr/include/c++/9/iomanip:132:5: note: candidate: 'template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::_Setbase)'
132 | operator>>(basic_istream<_CharT, _Traits>& __is, _Setbase __f)
| ^~~~~~~~
/usr/include/c++/9/iomanip:132:5: note: template argument deduction/substitution failed:
foo.cc:7:29: note: 'std::basic_ostream<char>::__ostream_type' {aka 'std::basic_ostream<char>'} is not derived from 'std::basic_istream<_CharT, _Traits>'
7 | cout<<fixed>>setprecision(7)<<(a*x*3+b*x*2+c*x+d)*1.0;
| ^
In file included from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:72,
from foo.cc:1:
/usr/include/c++/9/iomanip:170:5: note: candidate: 'template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::_Setfill<_CharT>)'
170 | operator>>(basic_istream<_CharT, _Traits>& __is, _Setfill<_CharT> __f)
| ^~~~~~~~
/usr/include/c++/9/iomanip:170:5: note: template argument deduction/substitution failed:
foo.cc:7:29: note: 'std::basic_ostream<char>::__ostream_type' {aka 'std::basic_ostream<char>'} is not derived from 'std::basic_istream<_CharT, _Traits>'
7 | cout<<fixed>>setprecision(7)<<(a*x*3+b*x*2+c*x+d)*1.0;
| ^
In file included from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:72,
from foo.cc:1:
/usr/include/c++/9/iomanip:200:5: note: candidate: 'template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::_Setprecision)'
200 | operator>>(basic_istream<_CharT, _Traits>& __is, _Setprecision __f)
| ^~~~~~~~
/usr/include/c++/9/iomanip:200:5: note: template argument deduction/substitution failed:
foo.cc:7:29: note: 'std::basic_ostream<char>::__ostream_type' {aka 'std::basic_ostream<char>'} is not derived from 'std::basic_istream<_CharT, _Traits>'
7 | cout<<fixed>>setprecision(7)<<(a*x*3+b*x*2+c*x+d)*1.0;
| ^
In file included from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:72,
from foo.cc:1:
/usr/include/c++/9/iomanip:230:5: note: candidate: 'template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::_Setw)'
230 | operator>>(basic_istream<_CharT, _Traits>& __is, _Setw __f)
| ^~~~~~~~
/usr/include/c++/9/iomanip:230:5: note: template argument deduction/substitution failed:
foo.cc:7:29: note: 'std::basic_ostream<char>::__ostream_type' {aka 'std::basic_ostream<char>'} is not derived from 'std::basic_istream<_CharT, _Traits>'
7 | cout<<fixed>>setprecision(7)<<(a*x*3+b*x*2+c*x+d)*1.0;
| ^
In file included from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:72,
from foo.cc:1:
/usr/include/c++/9/iomanip:264:5: note: candidate: 'template<class _CharT, class _Traits, class _MoneyT> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::_Get_money<_MoneyT>)'
264 | operator>>(basic_istream<_CharT, _Traits>& __is, _Get_money<_MoneyT> __f)
| ^~~~~~~~
/usr/include/c++/9/iomanip:264:5: note: template argument deduction/substitution failed:
foo.cc:7:29: note: 'std::basic_ostream<char>::__ostream_type' {aka 'std::basic_ostream<char>'} is not derived from 'std::basic_istream<_CharT, _Traits>'
7 | cout<<fixed>>setprecision(7)<<(a*x*3+b*x*2+c*x+d)*1.0;
| ^
In file included from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:72,
from foo.cc:1:
/usr/include/c++/9/iomanip:418:5: note: candidate: 'template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::_Get_time<_CharT>)'
418 | operator>>(basic_istream<_CharT, _Traits>& __is, _Get_time<_CharT> __f)
| ^~~~~~~~
/usr/include/c++/9/iomanip:418:5: note: template argument deduction/substitution failed:
foo.cc:7:29: note: 'std::basic_ostream<char>::__ostream_type' {aka 'std::basic_ostream<char>'} is not derived from 'std::basic_istream<_CharT, _Traits>'
7 | cout<<fixed>>setprecision(7)<<(a*x*3+b*x*2+c*x+d)*1.0;
| ^
In file included from /usr/include/c++/9/valarray:603,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:95,
from foo.cc:1:
/usr/include/c++/9/bits/valarray_after.h:414:5: note: candidate: 'template<class _Dom1, class _Dom2> std::_Expr<std::__detail::_BinClos<std::__shift_right, std::_Expr, std::_Expr, _Dom1, _Dom2>, typename std::__fun<std::__shift_right, typename _Dom1::value_type>::result_type> std::operator>>(const std::_Expr<_Dom1, typename _Dom1::value_type>&, const std::_Expr<_Dom2, typename _Dom2::value_type>&)'
414 | _DEFINE_EXPR_BINARY_OPERATOR(>>, __shift_right)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/9/bits/valarray_after.h:414:5: note: template argument deduction/substitution failed:
foo.cc:7:29: note: 'std::basic_ostream<char>::__ostream_type' {aka 'std::basic_ostream<char>'} is not derived from 'const std::_Expr<_Dom1, typename _Dom1::value_type>'
7 | cout<<fixed>>setprecision(7)<<(a*x*3+b*x*2+c*x+d)*1.0;
| ^
In file included from /usr/include/c++/9/valarray:603,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:95,
from foo.cc:1:
/usr/include/c++/9/bits/valarray_after.h:414:5: note: candidate: 'template<class _Dom> std::_Expr<std::__detail::_BinClos<std::__shift_right, std::_Expr, std::_Constant, _Dom, typename _Dom::value_type>, typename std::__fun<std::__shift_right, typename _Dom1::value_type>::result_type> std::operator>>(const std::_Expr<_Dom1, typename _Dom1::value_type>&, const typename _Dom::value_type&)'
414 | _DEFINE_EXPR_BINARY_OPERATOR(>>, __shift_right)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/9/bits/valarray_after.h:414:5: note: template argument deduction/substitution failed:
foo.cc:7:29: note: 'std::basic_ostream<char>::__ostream_type' {aka 'std::basic_ostream<char>'} is not derived from 'const std::_Expr<_Dom1, typename _Dom1::value_type>'
7 | cout<<fixed>>setprecision(7)<<(a*x*3+b*x*2+c*x+d)*1.0;
| ^
In file included from /usr/include/c++/9/valarray:603,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:95,
from foo.cc:1:
/usr/include/c++/9/bits/valarray_after.h:414:5: note: candidate: 'template<class _Dom> std::_Expr<std::__detail::_BinClos<std::__shift_right, std::_Constant, std::_Expr, typename _Dom::value_type, _Dom>, typename std::__fun<std::__shift_right, typename _Dom1::value_type>::result_type> std::operator>>(const typename _Dom::value_type&, const std::_Expr<_Dom1, typename _Dom1::value_type>&)'
414 | _DEFINE_EXPR_BINARY_OPERATOR(>>, __shift_right)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/9/bits/valarray_after.h:414:5: note: template argument deduction/substitution failed:
foo.cc:7:29: note: 'std::_Setprecision' is not derived from 'const std::_Expr<_Dom1, typename _Dom1::value_type>'
7 | cout<<fixed>>setprecision(7)<<(a*x*3+b*x*2+c*x+d)*1.0;
| ^
In file included from /usr/include/c++/9/valarray:603,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:95,
from foo.cc:1:
/usr/include/c++/9/bits/valarray_after.h:414:5: note: candidate: 'template<class _Dom> std::_Expr<std::__detail::_BinClos<std::__shift_right, std::_Expr, std::_ValArray, _Dom, typename _Dom::value_type>, typename std::__fun<std::__shift_right, typename _Dom1::value_type>::result_type> std::operator>>(const std::_Expr<_Dom1, typename _Dom1::value_type>&, const std::valarray<typename _Dom::value_type>&)'
414 | _DEFINE_EXPR_BINARY_OPERATOR(>>, __shift_right)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/9/bits/valarray_after.h:414:5: note: template argument deduction/substitution failed:
foo.cc:7:29: note: 'std::basic_ostream<char>::__ostream_type' {aka 'std::basic_ostream<char>'} is not derived from 'const std::_Expr<_Dom1, typename _Dom1::value_type>'
7 | cout<<fixed>>setprecision(7)<<(a*x*3+b*x*2+c*x+d)*1.0;
| ^
In file included from /usr/include/c++/9/valarray:603,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:95,
from foo.cc:1:
/usr/include/c++/9/bits/valarray_after.h:414:5: note: candidate: 'template<class _Dom> std::_Expr<std::__detail::_BinClos<std::__shift_right, std::_ValArray, std::_Expr, typename _Dom::value_type, _Dom>, typename std::__fun<std::__shift_right, typename _Dom1::value_type>::result_type> std::operator>>(const std::valarray<typename _Dom::value_type>&, const std::_Expr<_Dom1, typename _Dom1::value_type>&)'
414 | _DEFINE_EXPR_BINARY_OPERATOR(>>, __shift_right)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/9/bits/valarray_after.h:414:5: note: template argument deduction/substitution failed:
foo.cc:7:29: note: 'std::_Setprecision' is not derived from 'const std::_Expr<_Dom1, typename _Dom1::value_type>'
7 | cout<<fixed>>setprecision(7)<<(a*x*3+b*x*2+c*x+d)*1.0;
| ^
In file included from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:95,
from foo.cc:1:
/usr/include/c++/9/valarray:1194:1: note: candidate: 'template<class _Tp> std::_Expr<std::__detail::_BinClos<std::__shift_right, std::_ValArray, std::_ValArray, _Tp, _Tp>, typename std::__fun<std::__shift_right, _Tp>::result_type> std::operator>>(const std::valarray<_Tp>&, const std::valarray<_Tp>&)'
1194 | _DEFINE_BINARY_OPERATOR(>>, __shift_right)
| ^~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/9/valarray:1194:1: note: template argument deduction/substitution failed:
foo.cc:7:29: note: 'std::basic_ostream<char>::__ostream_type' {aka 'std::basic_ostream<char>'} is not derived from 'const std::valarray<_Tp>'
7 | cout<<fixed>>setprecision(7)<<(a*x*3+b*x*2+c*x+d)*1.0;
| ^
In file included from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:95,
from foo.cc:1:
/usr/include/c++/9/valarray:1194:1: note: candidate: 'template<class _Tp> std::_Expr<std::__detail::_BinClos<std::__shift_right, std::_ValArray, std::_Constant, _Tp, _Tp>, typename std::__fun<std::__shift_right, _Tp>::result_type> std::operator>>(const std::valarray<_Tp>&, const typename std::valarray<_Tp>::value_type&)'
1194 | _DEFINE_BINARY_OPERATOR(>>, __shift_right)
| ^~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/9/valarray:1194:1: note: template argument deduction/substitution failed:
foo.cc:7:29: note: 'std::basic_ostream<char>::__ostream_type' {aka 'std::basic_ostream<char>'} is not derived from 'const std::valarray<_Tp>'
7 | cout<<fixed>>setprecision(7)<<(a*x*3+b*x*2+c*x+d)*1.0;
| ^
In file included from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:95,
from foo.cc:1:
/usr/include/c++/9/valarray:1194:1: note: candidate: 'template<class _Tp> std::_Expr<std::__detail::_BinClos<std::__shift_right, std::_Constant, std::_ValArray, _Tp, _Tp>, typename std::__fun<std::__shift_right, _Tp>::result_type> std::operator>>(const typename std::valarray<_Tp>::value_type&, const std::valarray<_Tp>&)'
1194 | _DEFINE_BINARY_OPERATOR(>>, __shift_right)
| ^~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/9/valarray:1194:1: note: template argument deduction/substitution failed:
foo.cc:7:29: note: 'std::_Setprecision' is not derived from 'const std::valarray<_Tp>'
7 | cout<<fixed>>setprecision(7)<<(a*x*3+b*x*2+c*x+d)*1.0;
| ^
In file included from /usr/include/c++/9/random:51,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:108,
from foo.cc:1:
/usr/include/c++/9/bits/random.tcc:898:5: note: candidate: 'template<class _IntType, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::uniform_int_distribution<_IntType>&)'
898 | operator>>(std::basic_istream<_CharT, _Traits>& __is,
| ^~~~~~~~
/usr/include/c++/9/bits/random.tcc:898:5: note: template argument deduction/substitution failed:
foo.cc:7:29: note: 'std::basic_ostream<char>::__ostream_type' {aka 'std::basic_ostream<char>'} is not derived from 'std::basic_istream<_CharT, _Traits>'
7 | cout<<fixed>>setprecision(7)<<(a*x*3+b*x*2+c*x+d)*1.0;
| ^
In file included from /usr/include/c++/9/random:51,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:108,
from foo.cc:1:
/usr/include/c++/9/bits/random.tcc:960:5: note: candidate: 'template<class _RealType, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::uniform_real_distribution<_IntType>&)'
960 | operator>>(std::basic_istream<_CharT, _Traits>& __is,
| ^~~~~~~~
/usr/include/c++/9/bits/random.tcc:960:5: note: template argument deduction/substitution failed:
foo.cc:7:29: note: 'std::basic_ostream<char>::__ostream_type' {aka 'std::basic_ostream<char>'} is not derived from 'std::basic_istream<_CharT, _Traits>'
7 | cout<<fixed>>setprecision(7)<<(a*x*3+b*x*2+c*x+d)*1.0;
| ^
In file included from /usr/include/c++/9/random:51,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:108,
from foo.cc:1:
/usr/include/c++/9/bits/random.tcc:2157:5: note: candidate: 'template<class _RealType, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::cauchy_distribution<_RealType>&)'
2157 | operator>>(std::basic_istream<_CharT, _Traits>& __is,
| ^~~~~~~~
/usr/include/c++/9/bits/random.tcc:2157:5: note: template argument deduction/substitution failed:
foo.cc:7:29: note: 'std::basic_ostream<char>::__ostream_type' {aka 'std::basic_ostream<char>'} is not derived from 'std::basic_istream<_CharT, _Traits>'
7 | cout<<fixed>>setprecision(7)<<(a*x*3+b*x*2+c*x+d)*1.0;
| ^
In file included from /usr/include/c++/9/random:49,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:108,
from foo.cc:1:
/usr/include/c++/9/bits/random.h:3714:5: note: candidate: 'template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::bernoulli_distribution&)'
3714 | operator>>(std::basic_istream<_CharT, _Traits>& __is,
| ^~~~~~~~
/usr/include/c++/9/bits/random.h:3714:5: note: template argument deduction/substitution failed:
foo.cc:7:29: note: 'std::basic_ostream<char>::__ostream_type' {aka 'std::basic_ostream<char>'} is not derived from 'std::basic_istream<_CharT, _Traits>'
7 | cout<<fixed>>setprecision(7)<<(a*x*3+b*x*2+c*x+d)*1.0;
| ^
In file included from /usr/include/c++/9/random:51,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:108,
from foo.cc:1:
/usr/include/c++/9/bits/random.tcc:1104:5: note: candidate: 'template<class _IntType, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::geometric_distribution<_IntType>&)'
1104 | operator>>(std::basic_istream<_CharT, _Traits>& __is,
| ^~~~~~~~
/usr/include/c++/9/bits/random.tcc:1104:5: note: template argument deduction/substitution failed:
foo.cc:7:29: note: 'std::basic_ostream<char>::__ostream_type' {aka 'std::basic_ostream<char>'} is not derived from 'std::basic_istream<_CharT, _Traits>'
7 | cout<<fixed>>setprecision(7)<<(a*x*3+b*x*2+c*x+d)*1.0;
| ^
In file included from /usr/include/c++/9/random:51,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:108,
from foo.cc:1:
/usr/include/c++/9/bits/random.tcc:1760:5: note: candidate: 'template<class _RealType, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::exponential_distribution<_RealType>&)'
1760 | operator>>(std::basic_istream<_CharT, _Traits>& __is,
| ^~~~~~~~
/usr/include/c++/9/bits/random.tcc:1760:5: note: template argument deduction/substitution failed:
foo.cc:7:29: note: 'std::basic_ostream<char>::__ostream_type' {aka 'std::basic_ostream<char>'} is not derived from 'std::basic_istream<_CharT, _Traits>'
7 | cout<<fixed>>setprecision(7)<<(a*x*3+b*x*2+c*x+d)*1.0;
| ^
In file included from /usr/include/c++/9/random:51,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:108,
from foo.cc:1:
/usr/include/c++/9/bits/random.tcc:2556:5: note: candidate: 'template<class _RealType, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::weibull_distribution<_RealType>&)'
2556 | operator>>(std::basic_istream<_CharT, _Traits>& __is,
| ^~~~~~~~
/usr/include/c++/9/bits/random.tcc:2556:5: note: template argument deduction/substitution failed:
foo.cc:7:29: note: 'std::basic_ostream<char>::__ostream_type' {aka 'std::basic_ostream<char>'} is not derived from 'std::basic_istream<_CharT, _Traits>'
7 | cout<<fixed>>setprecision(7)<<(a*x*3+b*x*2+c*x+d)*1.0;
| ^
In file included from /usr/include/c++/9/random:51,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:108,
from foo.cc:1:
/usr/include/c++/9/bits/random.tcc:2632:5: note: candidate: 'template<class _RealType, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::extreme_value_distribution<_RealType>&)'
2632 | operator>>(std::basic_istream<_CharT, _Traits>& __is,
| ^~~~~~~~
/usr/include/c++/9/bits/random.tcc:2632:5: note: template argument deduction/substitution failed:
foo.cc:7:29: note: 'std::basic_ostream<char>::__ostream_type' {aka 'std::basic_ostream<char>'} is not derived from 'std::basic_istream<_CharT, _Traits>'
7 | cout<<fixed>>setprecision(7)<<(a*x*3+b*x*2+c*x+d)*1.0;
| ^
In file included from /usr/include/c++/9/random:51,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:108,
from foo.cc:1:
/usr/include/c++/9/bits/random.tcc:176:5: note: candidate: 'template<class _UIntType, _UIntType __a, _UIntType __c, _UIntType __m, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::linear_congruential_engine<_UIntType, __a, __c, __m>&)'
176 | operator>>(std::basic_istream<_CharT, _Traits>& __is,
| ^~~~~~~~
/usr/include/c++/9/bits/random.tcc:176:5: note: template argument deduction/substitution failed:
foo.cc:7:29: note: 'std::basic_ostream<char>::__ostream_type' {aka 'std::basic_ostream<char>'} is not derived from 'std::basic_istream<_CharT, _Traits>'
7 | cout<<fixed>>setprecision(7)<<(a*x*3+b*x*2+c*x+d)*1.0;
| ^
In file included from /usr/include/c++/9/random:51,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:108,
from foo.cc:1:
/usr/include/c++/9/bits/random.tcc:504:5: note: candidate: 'template<class _UIntType1, long unsigned int __w1, long unsigned int __n1, long unsigned int __m1, long unsigned int __r1, _UIntType1 __a1, long unsigned int __u1, _UIntType1 __d1, long unsigned int __s1, _UIntType1 __b1, long unsigned int __t1, _UIntType1 __c1, long unsigned int __l1, _UIntType1 __f1, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::mersenne_twister_engine<_UIntType, __w, __n, __m, __r, __a, __u, __d, __s, __b, __t, __c, __l, __f>&)'
504 | operator>>(std::basic_istream<_CharT, _Traits>& __is,
| ^~~~~~~~
/usr/include/c++/9/bits/random.tcc:504:5: note: template argument deduction/substitution failed:
foo.cc:7:29: note: 'std::basic_ostream<char>::__ostream_type' {aka 'std::basic_ostream<char>'} is not derived from 'std::basic_istream<_CharT, _Traits>'
7 | cout<<fixed>>setprecision(7)<<(a*x*3+b*x*2+c*x+d)*1.0;
| ^
In file included from /usr/include/c++/9/random:51,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:108,
from foo.cc:1:
/usr/include/c++/9/bits/random.tcc:657:5: note: candidate: 'template<class _UIntType, long unsigned int __w, long unsigned int __s, long unsigned int __r, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::subtract_with_carry_engine<_UIntType, __w, __s, __r>&)'
657 | operator>>(std::basic_istream<_CharT, _Traits>& __is,
| ^~~~~~~~
/usr/include/c++/9/bits/random.tcc:657:5: note: template argument deduction/substitution failed:
foo.cc:7:29: note: 'std::basic_ostream<char>::__ostream_type' {aka 'std::basic_ostream<char>'} is not derived from 'std::basic_istream<_CharT, _Traits>'
7 | cout<<fixed>>setprecision(7)<<(a*x*3+b*x*2+c*x+d)*1.0;
| ^
In file included from /usr/include/c++/9/random:51,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:108,
from foo.cc:1:
/usr/include/c++/9/bits/random.tcc:725:5: note: candidate: 'template<class _RandomNumberEngine, long unsigned int __p, long unsigned int __r, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::discard_block_engine<_RandomNumberEngine, __p, __r>&)'
725 | operator>>(std::basic_istream<_CharT, _Traits>& __is,
| ^~~~~~~~
/usr/include/c++/9/bits/random.tcc:725:5: note: template argument deduction/substitution failed:
foo.cc:7:29: note: 'std::basic_ostream<char>::__ostream_type' {aka 'std::basic_ostream<char>'} is not derived from 'std::basic_istream<_CharT, _Traits>'
7 | cout<<fixed>>setprecision(7)<<(a*x*3+b*x*2+c*x+d)*1.0;
| ^
In file included from /usr/include/c++/9/random:51,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:108,
from foo.cc:1:
/usr/include/c++/9/bits/random.tcc:856:5: note: candidate: 'template<class _RandomNumberEngine, long unsigned int __k, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::shuffle_order_engine<_RandomNumberEngine, __k>&)'
856 | operator>>(std::basic_istream<_CharT, _Traits>& __is,
| ^~~~~~~~
/usr/include/c++/9/bits/random.tcc:856:5: note: template argument deduction/substitution failed:
foo.cc:7:29: note: 'std::basic_ostream<char>::__ostream_type' {aka 'std::basic_ostream<char>'} is not derived from 'std::basic_istream<_CharT, _Traits>'
7 | cout<<fixed>>setprecision(7)<<(a*x*3+b*x*2+c*x+d)*1.0;
| ^
In file included from /usr/include/c++/9/random:51,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:108,
from foo.cc:1:
/usr/include/c++/9/bits/random.tcc:1220:5: note: candidate: 'template<class _IntType, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::negative_binomial_distribution<_IntType>&)'
1220 | operator>>(std::basic_istream<_CharT, _Traits>& __is,
| ^~~~~~~~
/usr/include/c++/9/bits/random.tcc:1220:5: note: template argument deduction/substitution failed:
foo.cc:7:29: note: 'std::basic_ostream<char>::__ostream_type' {aka 'std::basic_ostream<char>'} is not derived from 'std::basic_istream<_CharT, _Traits>'
7 | cout<<fixed>>setprecision(7)<<(a*x*3+b*x*2+c*x+d)*1.0;
| ^
In file included from /usr/include/c++/9/random:51,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:108,
from foo.cc:1:
/usr/include/c++/9/bits/random.tcc:1431:5: note: candidate: 'template<class _IntType, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::poisson_distribution<_IntType>&)'
1431 | operator>>(std::basic_istream<_CharT, _Traits>& __is,
| ^~~~~~~~
/usr/include/c++/9/bits/random.tcc:1431:5: note: template argument deduction/substitution failed:
foo.cc:7:29: note: 'std::basic_ostream<char>::__ostream_type' {aka 'std::basic_ostream<char>'} is not derived from 'std::basic_istream<_CharT, _Traits>'
7 | cout<<fixed>>setprecision(7)<<(a*x*3+b*x*2+c*x+d)*1.0;
| ^
In file included from /usr/include/c++/9/random:51,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:108,
from foo.cc:1:
/usr/include/c++/9/bits/random.tcc:1699:5: note: candidate: 'template<class _IntType, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::binomial_distribution<_IntType>&)'
1699 | operator>>(std::basic_istream<_CharT, _Traits>& __is,
| ^~~~~~~~
/usr/include/c++/9/bits/random.tcc:1699:5: note: template argument deduction/substitution failed:
foo.cc:7:29: note: 'std::basic_ostream<char>::__ostream_type' {aka 'std::basic_ostream<char>'} is not derived from 'std::basic_istream<_CharT, _Traits>'
7 | cout<<fixed>>setprecision(7)<<(a*x*3+b*x*2+c*x+d)*1.0;
| ^
In file included from /usr/include/c++/9/random:51,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:108,
from foo.cc:1:
/usr/include/c++/9/bits/random.tcc:1931:5: note: candidate: 'template<class _RealType1, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::normal_distribution<_RealType>&)'
1931 | operator>>(std::basic_istream<_CharT, _Traits>& __is,
| ^~~~~~~~
/usr/include/c++/9/bits/random.tcc:1931:5: note: template argument deduction/substitution failed:
foo.cc:7:29: note: 'std::basic_ostream<char>::__ostream_type' {aka 'std::basic_ostream<char>'} is not derived from 'std::basic_istream<_CharT, _Traits>'
7 | cout<<fixed>>setprecision(7)<<(a*x*3+b*x*2+c*x+d)*1.0;
| ^
In file included from /usr/include/c++/9/random:51,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:108,
from foo.cc:1:
/usr/include/c++/9/bits/random.tcc:1998:5: note: candidate: 'template<class _RealType, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::lognormal_distribution<_RealType>&)'
1998 | operator>>(std::basic_istream<_CharT, _Traits>& __is,
| ^~~~~~~~
/usr/include/c++/9/bits/random.tcc:1998:5: note: template argument deduction/substitution failed:
foo.cc:7:29: note: 'std::basic_ostream<char>::__ostream_type' {aka 'std::basic_ostream<char>'} is not derived from 'std::basic_istream<_CharT, _Traits>'
7 | cout<<fixed>>setprecision(7)<<(a*x*3+b*x*2+c*x+d)*1.0;
| ^
In file included from /usr/include/c++/9/random:51,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:108,
from foo.cc:1:
/usr/include/c++/9/bits/random.tcc:2070:5: note: candidate: 'template<class _RealType, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::chi_squared_distribution<_RealType>&)'
2070 | operator>>(std::basic_istream<_CharT, _Traits>& __is,
| ^~~~~~~~
/usr/include/c++/9/bits/random.tcc:2070:5: note: template argument deduction/substitution failed:
foo.cc:7:29: note: 'std::basic_ostream<char>::__ostream_type' {aka 'std::basic_ostream<char>'} is not derived from 'std::basic_istream<_CharT, _Traits>'
7 | cout<<fixed>>setprecision(7)<<(a*x*3+b*x*2+c*x+d)*1.0;
| ^
In file included from /usr/include/c++/9/random:51,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:108,
from foo.cc:1:
/usr/include/c++/9/bits/random.tcc:2235:5: note: candidate: 'template<class _RealType, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::fisher_f_distribution<_RealType>&)'
2235 | operator>>(std::basic_istream<_CharT, _Traits>& __is,
| ^~~~~~~~
/usr/include/c++/9/bits/random.tcc:2235:5: note: template argument deduction/substitution failed:
foo.cc:7:29: note: 'std::basic_ostream<char>::__ostream_type' {aka 'std::basic_ostream<char>'} is not derived from 'std::basic_istream<_CharT, _Traits>'
7 | cout<<fixed>>setprecision(7)<<(a*x*3+b*x*2+c*x+d)*1.0;
| ^
In file included from /usr/include/c++/9/random:51,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:108,
from foo.cc:1:
/usr/include/c++/9/bits/random.tcc:2309:5: note: candidate: 'template<class _RealType, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::student_t_distribution<_RealType>&)'
2309 | operator>>(std::basic_istream<_CharT, _Traits>& __is,
| ^~~~~~~~
/usr/include/c++/9/bits/random.tcc:2309:5: note: template argument deduction/substitution failed:
foo.cc:7:29: note: 'std::basic_ostream<char>::__ostream_type' {aka 'std::basic_ostream<char>'} is not derived from 'std::basic_istream<_CharT, _Traits>'
7 | cout<<fixed>>setprecision(7)<<(a*x*3+b*x*2+c*x+d)*1.0;
| ^
In file included from /usr/include/c++/9/random:51,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:108,
from foo.cc:1:
/usr/include/c++/9/bits/random.tcc:2479:5: note: candidate: 'template<class _RealType1, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::gamma_distribution<_RealType>&)'
2479 | operator>>(std::basic_istream<_CharT, _Traits>& __is,
| ^~~~~~~~
/usr/include/c++/9/bits/random.tcc:2479:5: note: template argument deduction/substitution failed:
foo.cc:7:29: note: 'std::basic_ostream<char>::__ostream_type' {aka 'std::basic_ostream<char>'} is not derived from 'std::basic_istream<_CharT, _Traits>'
7 | cout<<fixed>>setprecision(7)<<(a*x*3+b*x*2+c*x+d)*1.0;
| ^
In file included from /usr/include/c++/9/random:51,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:108,
from foo.cc:1:
/usr/include/c++/9/bits/random.tcc:2791:5: note: candidate: 'template<class _IntType, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::discrete_distribution<_IntType>&)'
2791 | operator>>(std::basic_istream<_CharT, _Traits>& __is,
| ^~~~~~~~
/usr/include/c++/9/bits/random.tcc:2791:5: note: template argument deduction/substitution failed:
foo.cc:7:29: note: 'std::basic_ostream<char>::__ostream_type' {aka 'std::basic_ostream<char>'} is not derived from 'std::basic_istream<_CharT, _Traits>'
7 | cout<<fixed>>setprecision(7)<<(a*x*3+b*x*2+c*x+d)*1.0;
| ^
In file included from /usr/include/c++/9/random:51,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:108,
from foo.cc:1:
/usr/include/c++/9/bits/random.tcc:2999:5: note: candidate: 'template<class _RealType, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::piecewise_constant_distribution<_RealType>&)'
2999 | operator>>(std::basic_istream<_CharT, _Traits>& __is,
| ^~~~~~~~
/usr/include/c++/9/bits/random.tcc:2999:5: note: template argument deduction/substitution failed:
foo.cc:7:29: note: 'std::basic_ostream<char>::__ostream_type' {aka 'std::basic_ostream<char>'} is not derived from 'std::basic_istream<_CharT, _Traits>'
7 | cout<<fixed>>setprecision(7)<<(a*x*3+b*x*2+c*x+d)*1.0;
| ^
In file included from /usr/include/c++/9/random:51,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:108,
from foo.cc:1:
/usr/include/c++/9/bits/random.tcc:3206:5: note: candidate: 'template<class _RealType, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::piecewise_linear_distribution<_RealType>&)'
3206 | operator>>(std::basic_istream<_CharT, _Traits>& __is,
| ^~~~~~~~
/usr/include/c++/9/bits/random.tcc:3206:5: note: template argument deduction/substitution failed:
foo.cc:7:29: note: 'std::basic_ostream<char>::__ostream_type' {aka 'std::basic_ostream<char>'} is not derived from 'std::basic_istream<_CharT, _Traits>'
7 | cout<<fixed>>setprecision(7)<<(a*x*3+b*x*2+c*x+d)*1.0;
| ^
2020222尹祖雪 (2020122尹祖雪) LV 6
undefined
