Language: C++

#include "bits/stdc++.h"
using namespace std;
typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
const int INF = 1e9;
const ll LINF = 1e18;
template<class S,class T> ostream &operator << (ostream& out,const pair<S,T>& o){
    out << "(" << o.first << "," << o.second << ")"; return out;
}
/*
 Atcoder 100~200点代
 アな問題が多いので,まとめる
*/
// https://abc042.contest.atcoder.jp/tasks/abc042_a
//void solve(){ ll A,B,C; cin >> A >> B >> C; if(A == 5 && B == 5 && C == 7){ cout << "YES" << endl; return;} if(A == 5 && B == 7 && C == 5){ cout << "YES" << endl; return;} if(A == 7 && B == 5 && C == 5){ cout << "YES" << endl; return;} cout << "NO" << endl; return ; }
// https://abc043.contest.atcoder.jp/tasks/abc043_a
//void solve(){ ll N; cin >> N; cout << N*(N+1)/2 << endl; }
// https://abc044.contest.atcoder.jp/tasks/abc044_a
//void solve(){ll N,K,X,Y;cin>>N>>K>>X>>Y; cout<<X*min(N,K)+Y*max(0LL,N-K)<<endl;}
// https://abc045.contest.atcoder.jp/tasks/abc045_a
//void solve(){ll a,b,h;cin>>a>>b>>h;cout<<(a+b)*h/2<<endl;}
// https://abc046.contest.atcoder.jp/tasks/abc046_a
//void solve(){ ll a,b,c; cin >> a >> b >> c; set<ll> s; s.insert(a); s.insert(b); s.insert(c); cout << s.size() << endl; }
// https://abc047.contest.atcoder.jp/tasks/abc047_a
//void solve(){ll a,b,c;cin>>a>>b>>c;if(a==b+c||b==a+c||c==a+b)cout<<"Yes"<<endl;else cout<<"No"<<endl;}
// https://abc048.contest.atcoder.jp/tasks/abc048_a
//void solve(){string s1,s2,s3;cin>>s1>>s2>>s3;cout<<"A"<<s2[0]<<"C"<<endl;}
// https://abc049.contest.atcoder.jp/tasks/abc049_a
void solve(){char c;cin>>c;string s="aiueo";if(s.find(c)!=s.end())cout<<"vowel"<<endl;else cout<<"consonant"<<endl;}
// https://abc050.contest.atcoder.jp/tasks/abc050_a
//void solve(){}
// https://abc051.contest.atcoder.jp/tasks/abc051_a
//void solve(){}
// https://abc052.contest.atcoder.jp/tasks/abc052_a
//void solve(){}
// https://abc053.contest.atcoder.jp/tasks/abc053_a
//void solve(){}
// https://abc054.contest.atcoder.jp/tasks/abc054_a
//void solve(){}

// Main function
int main(void) {cin.tie(0); ios::sync_with_stdio(false); solve(); return 0; }


Compiler output:
a.cc: In function 'void solve()':
a.cc:30:57: error: no match for 'operator!=' (operand types are 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'std::__cxx11::basic_string<char>::iterator')
   30 | void solve(){char c;cin>>c;string s="aiueo";if(s.find(c)!=s.end())cout<<"vowel"<<endl;else cout<<"consonant"<<endl;}
      |                                                ~~~~~~~~~^~~~~~~~~
      |                                                      |         |
      |                                                      |         std::__cxx11::basic_string<char>::iterator
      |                                                      std::__cxx11::basic_string<char>::size_type {aka long unsigned int}
In file included from /usr/include/c++/14/regex:68,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:181,
                 from a.cc:1:
/usr/include/c++/14/bits/regex.h:1132:5: note: candidate: 'template<class _BiIter> bool std::__cxx11::operator!=(const sub_match<_BiIter>&, const sub_match<_BiIter>&)'
 1132 |     operator!=(const sub_match<_BiIter>& __lhs, const sub_match<_BiIter>& __rhs)
      |     ^~~~~~~~
/usr/include/c++/14/bits/regex.h:1132:5: note:   template argument deduction/substitution failed:
a.cc:30:65: note:   mismatched types 'const std::__cxx11::sub_match<_BiIter>' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'}
   30 | void solve(){char c;cin>>c;string s="aiueo";if(s.find(c)!=s.end())cout<<"vowel"<<endl;else cout<<"consonant"<<endl;}
      |                                                                 ^
/usr/include/c++/14/bits/regex.h:1212:5: note: candidate: 'template<class _Bi_iter, class _Ch_traits, class _Ch_alloc> bool std::__cxx11::operator!=(__sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>&, const sub_match<_BiIter>&)'
 1212 |     operator!=(const __sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/regex.h:1212:5: note:   template argument deduction/substitution failed:
a.cc:30:65: note:   mismatched types 'std::__cxx11::__sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'}
   30 | void solve(){char c;cin>>c;string s="aiueo";if(s.find(c)!=s.end())cout<<"vowel"<<endl;else cout<<"consonant"<<endl;}
      |                                                                 ^
/usr/include/c++/14/bits/regex.h:1305:5: note: candidate: 'template<class _Bi_iter, class _Ch_traits, class _Ch_alloc> bool std::__cxx11::operator!=(const sub_match<_BiIter>&, __sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>&)'
 1305 |     operator!=(const sub_match<_Bi_iter>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/regex.h:1305:5: note:   template argument deduction/substitution failed:
a.cc:30:65: note:   mismatched types 'const std::__cxx11::sub_match<_BiIter>' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'}
   30 | void solve(){char c;cin>>c;string s="aiueo";if(s.find(c)!=s.end())cout<<"vowel"<<endl;else cout<<"consonant"<<endl;}
      |                                                                 ^
/usr/include/c++/14/bits/regex.h:1379:5: note: candidate: 'template<class _Bi_iter> bool std::__cxx11::operator!=(const typename std::iterator_traits<_Iter>::value_type*, const sub_match<_BiIter>&)'
 1379 |     operator!=(typename iterator_traits<_Bi_iter>::value_type const* __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/regex.h:1379:5: note:   template argument deduction/substitution failed:
a.cc:30:65: note:   'std::__cxx11::basic_string<char>::iterator' is not derived from 'const std::__cxx11::sub_match<_BiIter>'
   30 | void solve(){char c;cin>>c;string s="aiueo";if(s.find(c)!=s.end())cout<<"vowel"<<endl;else cout<<"consonant"<<endl;}
      |                                                                 ^
/usr/include/c++/14/bits/regex.h:1473:5: note: candidate: 'template<class _Bi_iter> bool std::__cxx11::operator!=(const sub_match<_BiIter>&, const typename std::iterator_traits<_Iter>::value_type*)'
 1473 |     operator!=(const sub_match<_Bi_iter>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/regex.h:1473:5: note:   template argument deduction/substitution failed:
a.cc:30:65: note:   mismatched types 'const std::__cxx11::sub_match<_BiIter>' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'}
   30 | void solve(){char c;cin>>c;string s="aiueo";if(s.find(c)!=s.end())cout<<"vowel"<<endl;else cout<<"consonant"<<endl;}
      |                                                                 ^
/usr/include/c++/14/bits/regex.h:1547:5: note: candidate: 'template<class _Bi_iter> bool std::__cxx11::operator!=(const typename std::iterator_traits<_Iter>::value_type&, const sub_match<_BiIter>&)'
 1547 |     operator!=(typename iterator_traits<_Bi_iter>::value_type const& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/regex.h:1547:5: note:   template argument deduction/substitution failed:
a.cc:30:65: note:   'std::__cxx11::basic_string<char>::iterator' is not derived from 'const std::__cxx11::sub_match<_BiIter>'
   30 | void solve(){char c;cin>>c;string s="aiueo";if(s.find(c)!=s.end())cout<<"vowel"<<endl;else cout<<"consonant"<<endl;}
      |                                                                 ^
/usr/include/c++/14/bits/regex.h:1647:5: note: candidate: 'template<class _Bi_iter> bool std::__cxx11::operator!=(const sub_match<_BiIter>&, const typename std::iterator_traits<_Iter>::value_type&)'
 1647 |     operator!=(const sub_match<_Bi_iter>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/regex.h:1647:5: note:   template argument deduction/substitution failed:
a.cc:30:65: note:   mismatched types 'const std::__cxx11::sub_match<_BiIter>' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'}
   30 | void solve(){char c;cin>>c;string s="aiueo";if(s.find(c)!=s.end())cout<<"vowel"<<endl;else cout<<"consonant"<<endl;}
      |                                                                 ^
/usr/include/c++/14/bits/regex.h:2213:5: note: candidate: 'template<class _Bi_iter, class _Alloc> bool std::__cxx11::operator!=(const match_results<_BiIter, _Alloc>&, const match_results<_BiIter, _Alloc>&)'
 2213 |     operator!=(const match_results<_Bi_iter, _Alloc>& __m1,
      |     ^~~~~~~~
/usr/include/c++/14/bits/regex.h:2213:5: note:   template argument deduction/substitution failed:
a.cc:30:65: note:   mismatched types 'const std::__cxx11::match_results<_BiIter, _Alloc>' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'}
   30 | void solve(){char c;cin>>c;string s="aiueo";if(s.find(c)!=s.end())cout<<"vowel"<<endl;else cout<<"consonant"<<endl;}
      |                                                                 ^
In file included from /usr/include/c++/14/bits/stl_algobase.h:64,
                 from /usr/include/c++/14/algorithm:60,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:51:
/usr/include/c++/14/bits/stl_pair.h:1052:5: note: candidate: 'template<class _T1, class _T2> constexpr bool std::operator!=(const pair<_T1, _T2>&, const pair<_T1, _T2>&)'
 1052 |     operator!=(const pair<_T1, _T2>& __x, const pair<_T1, _T2>& __y)
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_pair.h:1052:5: note:   template argument deduction/substitution failed:
a.cc:30:65: note:   mismatched types 'const std::pair<_T1, _T2>' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'}
   30 | void solve(){char c;cin>>c;string s="aiueo";if(s.find(c)!=s.end())cout<<"vowel"<<endl;else cout<<"consonant"<<endl;}
      |                                                                 ^
In file included from /usr/include/c++/14/bits/stl_algobase.h:67:
/usr/include/c++/14/bits/stl_iterator.h:455:5: note: candidate: 'template<class _Iterator> constexpr bool std::operator!=(const reverse_iterator<_Iterator>&, const reverse_iterator<_Iterator>&)'
  455 |     operator!=(const reverse_iterator<_Iterator>& __x,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:455:5: note:   template argument deduction/substitution failed:
a.cc:30:65: note:   mismatched types 'const std::reverse_iterator<_Iterator>' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'}
   30 | void solve(){char c;cin>>c;string s="aiueo";if(s.find(c)!=s.end())cout<<"vowel"<<endl;else cout<<"consonant"<<endl;}
      |                                                                 ^
/usr/include/c++/14/bits/stl_iterator.h:500:5: note: candidate: 'template<class _IteratorL, class _IteratorR> constexpr bool std::operator!=(const reverse_iterator<_Iterator>&, const reverse_iterator<_IteratorR>&)'
  500 |     operator!=(const reverse_iterator<_IteratorL>& __x,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:500:5: note:   template argument deduction/substitution failed:
a.cc:30:65: note:   mismatched types 'const std::reverse_iterator<_Iterator>' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'}
   30 | void solve(){char c;cin>>c;string s="aiueo";if(s.find(c)!=s.end())cout<<"vowel"<<endl;else cout<<"consonant"<<endl;}
      |                                                                 ^
/usr/include/c++/14/bits/stl_iterator.h:1686:5: note: candidate: 'template<class _IteratorL, class _IteratorR> constexpr bool std::operator!=(const move_iterator<_IteratorL>&, const move_iterator<_IteratorR>&)'
 1686 |     operator!=(const move_iterator<_IteratorL>& __x,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:1686:5: note:   template argument deduction/substitution failed:
a.cc:30:65: note:   mismatched types 'const std::move_iterator<_IteratorL>' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'}
   30 | void solve(){char c;cin>>c;string s="aiueo";if(s.find(c)!=s.end())cout<<"vowel"<<endl;else cout<<"consonant"<<endl;}
      |                                                                 ^
/usr/include/c++/14/bits/stl_iterator.h:1753:5: note: candidate: 'template<class _Iterator> constexpr bool std::operator!=(const move_iterator<_Iterator