Language: C++

#include <iostream>
#include <vector>
#include <fstream>
#include <stdio.h>
#include <algorithm>
#define REP(i, n) for(int i = 0; i < n; i++)

using namespace std;
//typedef long long ll;

int main() { //int argc, const char * argv[]

    cin.tie(0);
    ios::sync_with_stdio(false);

    //std::cout << "Hello, World!\n";
    
    int N, m, tmp=0, ans=0;
    std::vector<int> v;
    cin>>N;
    m = N+1;
    while(1)
    {
        int x;
        std::cin >> x;
        if(std::cin.eof()){
            break;
        }
        v.push_back(x);
    }
    
    REP(i,N) {
        //std::vector<int>::iterator p = std::find(v.begin(), v.end(), i);
        auto tmp = std::find(v.begin(), v.end(), i);
        if (tmp < m) {
            ans += 1;
            m = tmp;
        }
        if (tmp==0) {
            break;
        }
    }

    std::cout << ans;
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:35:17: error: no match for 'operator<' (operand types are '__gnu_cxx::__normal_iterator<int*, std::vector<int> >' and 'int')
   35 |         if (tmp < m) {
      |             ~~~ ^ ~
      |             |     |
      |             |     int
      |             __gnu_cxx::__normal_iterator<int*, std::vector<int> >
In file included from /usr/include/c++/14/string:48,
                 from /usr/include/c++/14/bits/locale_classes.h:40,
                 from /usr/include/c++/14/bits/ios_base.h:41,
                 from /usr/include/c++/14/ios:44,
                 from /usr/include/c++/14/ostream:40,
                 from /usr/include/c++/14/iostream:41,
                 from a.cc:1:
/usr/include/c++/14/bits/stl_iterator.h:448:5: note: candidate: 'template<class _Iterator> constexpr bool std::operator<(const reverse_iterator<_Iterator>&, const reverse_iterator<_Iterator>&)'
  448 |     operator<(const reverse_iterator<_Iterator>& __x,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:448:5: note:   template argument deduction/substitution failed:
a.cc:35:19: note:   '__gnu_cxx::__normal_iterator<int*, std::vector<int> >' is not derived from 'const std::reverse_iterator<_Iterator>'
   35 |         if (tmp < m) {
      |                   ^
/usr/include/c++/14/bits/stl_iterator.h:493:5: note: candidate: 'template<class _IteratorL, class _IteratorR> constexpr bool std::operator<(const reverse_iterator<_Iterator>&, const reverse_iterator<_IteratorR>&)'
  493 |     operator<(const reverse_iterator<_IteratorL>& __x,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:493:5: note:   template argument deduction/substitution failed:
a.cc:35:19: note:   '__gnu_cxx::__normal_iterator<int*, std::vector<int> >' is not derived from 'const std::reverse_iterator<_Iterator>'
   35 |         if (tmp < m) {
      |                   ^
/usr/include/c++/14/bits/stl_iterator.h:1694:5: note: candidate: 'template<class _IteratorL, class _IteratorR> constexpr bool std::operator<(const move_iterator<_IteratorL>&, const move_iterator<_IteratorR>&)'
 1694 |     operator<(const move_iterator<_IteratorL>& __x,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:1694:5: note:   template argument deduction/substitution failed:
a.cc:35:19: note:   '__gnu_cxx::__normal_iterator<int*, std::vector<int> >' is not derived from 'const std::move_iterator<_IteratorL>'
   35 |         if (tmp < m) {
      |                   ^
/usr/include/c++/14/bits/stl_iterator.h:1760:5: note: candidate: 'template<class _Iterator> constexpr bool std::operator<(const move_iterator<_IteratorL>&, const move_iterator<_IteratorL>&)'
 1760 |     operator<(const move_iterator<_Iterator>& __x,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:1760:5: note:   template argument deduction/substitution failed:
a.cc:35:19: note:   '__gnu_cxx::__normal_iterator<int*, std::vector<int> >' is not derived from 'const std::move_iterator<_IteratorL>'
   35 |         if (tmp < m) {
      |                   ^
In file included from /usr/include/c++/14/bits/stl_algobase.h:64,
                 from /usr/include/c++/14/string:51:
/usr/include/c++/14/bits/stl_pair.h:1045:5: note: candidate: 'template<class _T1, class _T2> constexpr bool std::operator<(const pair<_T1, _T2>&, const pair<_T1, _T2>&)'
 1045 |     operator<(const pair<_T1, _T2>& __x, const pair<_T1, _T2>& __y)
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_pair.h:1045:5: note:   template argument deduction/substitution failed:
a.cc:35:19: note:   '__gnu_cxx::__normal_iterator<int*, std::vector<int> >' is not derived from 'const std::pair<_T1, _T2>'
   35 |         if (tmp < m) {
      |                   ^
In file included from /usr/include/c++/14/bits/basic_string.h:47,
                 from /usr/include/c++/14/string:54:
/usr/include/c++/14/string_view:673:5: note: candidate: 'template<class _CharT, class _Traits> constexpr bool std::operator<(basic_string_view<_CharT, _Traits>, basic_string_view<_CharT, _Traits>)'
  673 |     operator< (basic_string_view<_CharT, _Traits> __x,
      |     ^~~~~~~~
/usr/include/c++/14/string_view:673:5: note:   template argument deduction/substitution failed:
a.cc:35:19: note:   '__gnu_cxx::__normal_iterator<int*, std::vector<int> >' is not derived from 'std::basic_string_view<_CharT, _Traits>'
   35 |         if (tmp < m) {
      |                   ^
/usr/include/c++/14/string_view:680:5: note: candidate: 'template<class _CharT, class _Traits> constexpr bool std::operator<(basic_string_view<_CharT, _Traits>, __type_identity_t<basic_string_view<_CharT, _Traits> >)'
  680 |     operator< (basic_string_view<_CharT, _Traits> __x,
      |     ^~~~~~~~
/usr/include/c++/14/string_view:680:5: note:   template argument deduction/substitution failed:
a.cc:35:19: note:   '__gnu_cxx::__normal_iterator<int*, std::vector<int> >' is not derived from 'std::basic_string_view<_CharT, _Traits>'
   35 |         if (tmp < m) {
      |                   ^
/usr/include/c++/14/string_view:688:5: note: candidate: 'template<class _CharT, class _Traits> constexpr bool std::operator<(__type_identity_t<basic_string_view<_CharT, _Traits> >, basic_string_view<_CharT, _Traits>)'
  688 |     operator< (__type_identity_t<basic_string_view<_CharT, _Traits>> __x,
      |     ^~~~~~~~
/usr/include/c++/14/string_view:688:5: note:   template argument deduction/substitution failed:
a.cc:35:19: note:   mismatched types 'std::basic_string_view<_CharT, _Traits>' and 'int'
   35 |         if (tmp < m) {
      |                   ^
/usr/include/c++/14/bits/basic_string.h:3874:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> bool std::operator<(const __cxx11::basic_string<_CharT, _Traits, _Allocator>&, const __cxx11::basic_string<_CharT, _Traits, _Allocator>&)'
 3874 |     operator<(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:3874:5: note:   template argument deduction/substitution failed:
a.cc:35:19: note:   '__gnu_cxx::__normal_iterator<int*, std::vector<int> >' is not derived from 'const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>'
   35 |         if (tmp < m) {
      |                   ^
/usr/include/c++/14/bits/basic_string.h:3888:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> bool std::operator<(const __cxx11::basic_string<_CharT, _Traits, _Allocator>&, const _CharT*)'
 3888 |     operator<(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:3888:5: note:   template argument deduction/substitution failed:
a.cc:35:19: note:   '__gnu_cxx::__normal_iterator<int*, std::vector<int> >' is not derived from 'const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>'
   35 |         if (tmp < m) {
      |                   ^
/usr/include/c++/14/bits/basic_string.h:3901:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> bool std::operator<(const _CharT*, const __cxx11::basic_string<_CharT, _Traits, _Allocator>&)'
 3901 |     operator<(const _CharT* __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:3901:5: note:   template argument deduction/substitution failed:
a.cc:35:19: note:   mismatched types 'const _CharT*' and '__gnu_cxx::__normal_iterator<int*, std::vector<int> >'
   35 |         if (tmp < m) {
      |                   ^
In file included from /usr/include/c++/14/bits/memory_resource.h:47,
                 from /usr/include/c++/14/string:68:
/usr/include/c++/14/tuple:2600:5: note: candidate: 'template<class ... _TElements, class ... _UElements> constexpr bool std::operator<(const tuple<_UTypes ...>&, const tuple<_Elements ...>&)'
 2600 |     operator<(const tuple<_TElements...>& __t,
      |     ^~~~~~~~
/usr/include/c++/14/tuple:2600:5: note:   template argument deduction/substitution failed:
a.cc:35:19: note:   '__gnu_cxx::__normal_iterator<int*, std::vector<int> >' is not derived from 'const std::tuple<_UTypes ...>'
   35 |         if (tmp < m) {
      |                   ^
In file included from /usr/include/c++/14/vector:66,
                 from a.cc:2:
/usr/include/c++/14/bits/stl_vector.h:2089:5: note: candidate: 'template<class _Tp, class _Alloc> bool std::operator<(const vector<_Tp, _Alloc>&, const vector<_Tp, _Alloc>&)'
 2089 |     operator<(const vector<_Tp, _Alloc>& __x, const vector<_Tp, _Alloc>& __y)
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_vector.h:2089:5: note:   template argument deduction/substitution failed:
a.cc:35:19: note:   '__gnu_cxx::__normal_iterator<int*, std::vector<int> >' is not derived from 'const std::vector<_Tp, _Alloc>'
   35 |         if (tmp < m) {
      |                   ^
/usr/include/c++/14/bits/stl_iterator.h:1241:5: note: candidate: 'template<class _IteratorL, class _IteratorR, class _Container> bool __gnu_cxx::operator<(const __normal_iterator<_IteratorL, _Container>&, const __normal_iterator<_IteratorR, _Container>&)'
 1241 |     operator<(const __normal_iterator<_IteratorL, _Container>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:1241:5: note:   template argument deduction/substitution failed:
a.cc:35:19: note:   mismatched types 'const __gnu_cxx::__normal_iterator<_IteratorR, _Container>' and 'int'
   35 |         if (tmp < m) {
      |                   ^
/usr/include/c++/14/bits/stl_iterator.h:1249:5: note: candidate: 'template<class _Iterator, class _Container> bool __gnu_cxx::operator<(const __normal_iterator<_Iterator, _Container>&, const __normal_iterator<_Iterator, _Container>&)'
 1249 |     operator<(const __normal_iterator<_Iterator, _Container>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:1249:5: note:   template argument deduction/substitution failed:
a.cc:35:19: note:   mismatched types 'const __gnu_cxx::__normal_iterator<_Iterator, _Container>' and 'int'
   35 |         if (tmp < m) {
      |                   ^
In file included from /usr/include/c++/14/bits/ios_base.h:46:
/usr/include/c++/14/system_error:324:3: note: candidate: 'bool std::operator<(const error_code&, const error_code&)'
  324 |   operator<(const error_code& __lhs, const error_code