/in/foo.cc:13:16: error: stray '\357' in program
 int getf(int f)；
                ^
/in/foo.cc:13:17: error: stray '\274' in program
 int getf(int f)；
                 ^
/in/foo.cc:13:18: error: stray '\233' in program
 int getf(int f)；
                  ^
/in/foo.cc:14:1: error: expected initializer before 'void'
 void merge(int a,int b);
 ^~~~
/in/foo.cc: In function 'int main()':
/in/foo.cc:32:16: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
   if(x=y&&op==2) {ans++;continue;}
                ^
/in/foo.cc:35:13: error: 'getf' was not declared in this scope
    if(getf(x)==getf(y+n)) {ans++;continue;}
             ^
/in/foo.cc:36:13: error: 'getf' was not declared in this scope
    if(getf(x)==getf(y+2*n)  {ans++;continue;}
             ^
/in/foo.cc:36:29: error: expected ')' before '{' token
    if(getf(x)==getf(y+2*n)  {ans++;continue;}
                             ^
/in/foo.cc:38:17: error: no matching function for call to 'merge(int, int)'
    merge(x+n,y+n);
                 ^
In file included from /usr/include/c++/6/algorithm:62:0,
                 from /in/foo.cc:2:
/usr/include/c++/6/bits/stl_algo.h:4789:5: note: candidate: template<class _IIter1, class _IIter2, class _OIter> _OIter std::merge(_IIter1, _IIter1, _IIter2, _IIter2, _OIter)
     merge(_InputIterator1 __first1, _InputIterator1 __last1,
     ^~~~~
/usr/include/c++/6/bits/stl_algo.h:4789:5: note:   template argument deduction/substitution failed:
/in/foo.cc:38:17: note:   candidate expects 5 arguments, 2 provided
    merge(x+n,y+n);
                 ^
In file included from /usr/include/c++/6/algorithm:62:0,
                 from /in/foo.cc:2:
/usr/include/c++/6/bits/stl_algo.h:4839:5: note: candidate: template<class _IIter1, class _IIter2, class _OIter, class _Compare> _OIter std::merge(_IIter1, _IIter1, _IIter2, _IIter2, _OIter, _Compare)
     merge(_InputIterator1 __first1, _InputIterator1 __last1,
     ^~~~~
/usr/include/c++/6/bits/stl_algo.h:4839:5: note:   template argument deduction/substitution failed:
/in/foo.cc:38:17: note:   candidate expects 6 arguments, 2 provided
    merge(x+n,y+n);
                 ^
/in/foo.cc:39:15: error: expected ')' before ';' token
    merge(x+2*n;y+2*n);
               ^
/in/foo.cc:39:21: error: expected ';' before ')' token
    merge(x+2*n;y+2*n);
                     ^
/in/foo.cc:39:17: warning: statement has no effect [-Wunused-value]
    merge(x+2*n;y+2*n);
                ~^~~~
/in/foo.cc:43:13: error: 'getf' was not declared in this scope
    if(getf(x)==getf(y)) {ans++;continue;}
             ^
/in/foo.cc:44:13: error: 'getf' was not declared in this scope
    if(getf(x)==getf(y+2*n)  {ans++;continue;}
             ^
/in/foo.cc:44:29: error: expected ')' before '{' token
    if(getf(x)==getf(y+2*n)  {ans++;continue;}
                             ^
/in/foo.cc:46:19: error: no matching function for call to 'merge(int, int)'
    merge(x+n,y+n*2);
                   ^
In file included from /usr/include/c++/6/algorithm:62:0,
                 from /in/foo.cc:2:
/usr/include/c++/6/bits/stl_algo.h:4789:5: note: candidate: template<class _IIter1, class _IIter2, class _OIter> _OIter std::merge(_IIter1, _IIter1, _IIter2, _IIter2, _OIter)
     merge(_InputIterator1 __first1, _InputIterator1 __last1,
     ^~~~~
/usr/include/c++/6/bits/stl_algo.h:4789:5: note:   template argument deduction/substitution failed:
/in/foo.cc:46:19: note:   candidate expects 5 arguments, 2 provided
    merge(x+n,y+n*2);
                   ^
In file included from /usr/include/c++/6/algorithm:62:0,
                 from /in/foo.cc:2:
/usr/include/c++/6/bits/stl_algo.h:4839:5: note: candidate: template<class _IIter1, class _IIter2, class _OIter, class _Compare> _OIter std::merge(_IIter1, _IIter1, _IIter2, _IIter2, _OIter, _Compare)
     merge(_InputIterator1 __first1, _InputIterator1 __last1,
     ^~~~~
/usr/include/c++/6/bits/stl_algo.h:4839:5: note:   template argument deduction/substitution failed:
/in/foo.cc:46:19: note:   candidate expects 6 arguments, 2 provided
    merge(x+n,y+n*2);
                   ^
/in/foo.cc:47:17: error: no matching function for call to 'merge(int, int&)'
    merge(x+2*n,y);
                 ^
In file included from /usr/include/c++/6/algorithm:62:0,
                 from /in/foo.cc:2:
/usr/include/c++/6/bits/stl_algo.h:4789:5: note: candidate: template<class _IIter1, class _IIter2, class _OIter> _OIter std::merge(_IIter1, _IIter1, _IIter2, _IIter2, _OIter)
     merge(_InputIterator1 __first1, _InputIterator1 __last1,
     ^~~~~
/usr/include/c++/6/bits/stl_algo.h:4789:5: note:   template argument deduction/substitution failed:
/in/foo.cc:47:17: note:   candidate expects 5 arguments, 2 provided
    merge(x+2*n,y);
                 ^
In file included from /usr/include/c++/6/algorithm:62:0,
                 from /in/foo.cc:2:
/usr/include/c++/6/bits/stl_algo.h:4839:5: note: candidate: template<class _IIter1, class _IIter2, class _OIter, class _Compare> _OIter std::merge(_IIter1, _IIter1, _IIter2, _IIter2, _OIter, _Compare)
     merge(_InputIterator1 __first1, _InputIterator1 __last1,
     ^~~~~
/usr/include/c++/6/bits/stl_algo.h:4839:5: note:   template argument deduction/substitution failed:
/in/foo.cc:47:17: note:   candidate expects 6 arguments, 2 provided
    merge(x+2*n,y);
                 ^