foo.cc: In function 'void calc(int, int)':
foo.cc:9:10: warning: suggest parentheses around comparison in operand of '|' [-Wparentheses]
    9 |    if(ans>minn|now>6) return;
      |       ~~~^~~~~
foo.cc:24:13: warning: suggest parentheses around comparison in operand of '&' [-Wparentheses]
   24 |      if(a[5]==0 & ans<minn) minn=ans;
      |         ~~~~^~~
foo.cc: In function 'int main()':
foo.cc:45:3: error: reference to 'hash' is ambiguous
   45 |   hash[1]=1;
      |   ^~~~
In file included from /usr/include/c++/9/bits/basic_string.h:6722,
                 from /usr/include/c++/9/string:55,
                 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/functional_hash.h:58:12: note: candidates are: 'template<class _Tp> struct std::hash'
   58 |     struct hash;
      |            ^~~~
foo.cc:4:7: note:                 'int hash [10]'
    4 | int n,hash[10],minn=9879841;
      |       ^~~~
foo.cc:47:5: error: reference to 'hash' is ambiguous
   47 |     hash[i]=hash[i-1]<<1;
      |     ^~~~
In file included from /usr/include/c++/9/bits/basic_string.h:6722,
                 from /usr/include/c++/9/string:55,
                 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/functional_hash.h:58:12: note: candidates are: 'template<class _Tp> struct std::hash'
   58 |     struct hash;
      |            ^~~~
foo.cc:4:7: note:                 'int hash [10]'
    4 | int n,hash[10],minn=9879841;
      |       ^~~~
foo.cc:47:13: error: reference to 'hash' is ambiguous
   47 |     hash[i]=hash[i-1]<<1;
      |             ^~~~
In file included from /usr/include/c++/9/bits/basic_string.h:6722,
                 from /usr/include/c++/9/string:55,
                 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/functional_hash.h:58:12: note: candidates are: 'template<class _Tp> struct std::hash'
   58 |     struct hash;
      |            ^~~~
foo.cc:4:7: note:                 'int hash [10]'
    4 | int n,hash[10],minn=9879841;
      |       ^~~~
foo.cc:56:27: error: reference to 'hash' is ambiguous
   56 |     if(b[5-j]=='0') a[i]+=hash[j];
      |                           ^~~~
In file included from /usr/include/c++/9/bits/basic_string.h:6722,
                 from /usr/include/c++/9/string:55,
                 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/functional_hash.h:58:12: note: candidates are: 'template<class _Tp> struct std::hash'
   58 |     struct hash;
      |            ^~~~
foo.cc:4:7: note:                 'int hash [10]'
    4 | int n,hash[10],minn=9879841;
      |       ^~~~
foo.cc:44:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   44 |   scanf("%d",&n);
      |   ~~~~~^~~~~~~~~
foo.cc:54:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   54 |   scanf("%s",b);
      |   ~~~~~^~~~~~~~

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