Language: C++

#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
#define INF 1e9+7
#define rep(i, n) for (ll i = 0; i < (ll)(n); i++)
#define all(x) (x).begin(),(x).end()
ll min(ll a,ll b){
  if(a>b){
    return b;
    }
      else{
        return a;
      }
  }
  
  ll max(ll a,ll b){
    if(a>b){
      return a;
    }
    else{
      return b;
    }
  }

ll power(ll a,ll b){
 ll ans=1;
 for(ll i=1;i<=b;i++){
ans*=a;
  }
  return ans;
}

 long long int gcd(long long int m,long long int n){
 	if(n==0){
       return m;
     }
   return gcd(n,m%n);
 }
long long int lcm(long long int number1,long long int number2){
	return number1 * number2 / gcd(number1,number2);	
}
int main(){
  ll N;
  cin>>N;
  
  vector<ll>A(N);
  vector<ll>B(N);
  vector<ll>C(N);
  vector<ll>mid(N);
  vector<ll>low(N);
  
  rep(i,N){
    cin>>A[i]>>B[i]>>C[i];
  }
  
  sort(all(A));
  sort(all(B));
  sort(all(C));
  
  rep(i,N){//C配列のうちB[i]よりうえのものの数
    low[i]=C.end()-lower_bound(C.begin(),C.end(),B[i]+1)+1;
  }
  
  rep(i,N){//B配列の内A[i]以上のものの総和
    if(lower_bound(B.begin(),B.end(),A[i]+1)-1>=1){
mid[i]=low[B.end()-1]+low[lower_bound(B.begin(),B.end(),A[i]+1)-1]-low[lower_bound(B.begin(),B.end(),A[i]+1)-2];
    }
    else{
      mid[i]=low[B.end()-1];
    }

  }
ll ans=0;
  rep(i,N){
    ans+=mid[i];
  }
  
  
  cout<<ans<<endl;
}


 
    

Compiler output:
a.cc: In function 'int main()':
a.cc:65:47: error: no match for 'operator>=' (operand types are '__gnu_cxx::__normal_iterator<long long int*, std::vector<long long int> >' and 'int')
   65 |     if(lower_bound(B.begin(),B.end(),A[i]+1)-1>=1){
      |        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~
      |                                             |   |
      |                                             |   int
      |                                             __gnu_cxx::__normal_iterator<long long int*, std::vector<long long 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:1165:5: note: candidate: 'template<class _BiIter> bool std::__cxx11::operator>=(const sub_match<_BiIter>&, const sub_match<_BiIter>&)'
 1165 |     operator>=(const sub_match<_BiIter>& __lhs, const sub_match<_BiIter>& __rhs)
      |     ^~~~~~~~
/usr/include/c++/14/bits/regex.h:1165:5: note:   template argument deduction/substitution failed:
a.cc:65:49: note:   '__gnu_cxx::__normal_iterator<long long int*, std::vector<long long int> >' is not derived from 'const std::__cxx11::sub_match<_BiIter>'
   65 |     if(lower_bound(B.begin(),B.end(),A[i]+1)-1>=1){
      |                                                 ^
/usr/include/c++/14/bits/regex.h:1248:5: 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>&)'
 1248 |     operator>=(const __sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/regex.h:1248:5: note:   template argument deduction/substitution failed:
a.cc:65:49: note:   '__gnu_cxx::__normal_iterator<long long int*, std::vector<long long int> >' is not derived from 'std::__cxx11::__sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>'
   65 |     if(lower_bound(B.begin(),B.end(),A[i]+1)-1>=1){
      |                                                 ^
/usr/include/c++/14/bits/regex.h:1341:5: 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>&)'
 1341 |     operator>=(const sub_match<_Bi_iter>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/regex.h:1341:5: note:   template argument deduction/substitution failed:
a.cc:65:49: note:   '__gnu_cxx::__normal_iterator<long long int*, std::vector<long long int> >' is not derived from 'const std::__cxx11::sub_match<_BiIter>'
   65 |     if(lower_bound(B.begin(),B.end(),A[i]+1)-1>=1){
      |                                                 ^
/usr/include/c++/14/bits/regex.h:1415:5: note: candidate: 'template<class _Bi_iter> bool std::__cxx11::operator>=(const typename std::iterator_traits<_Iter>::value_type*, const sub_match<_BiIter>&)'
 1415 |     operator>=(typename iterator_traits<_Bi_iter>::value_type const* __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/regex.h:1415:5: note:   template argument deduction/substitution failed:
a.cc:65:49: note:   mismatched types 'const std::__cxx11::sub_match<_BiIter>' and 'int'
   65 |     if(lower_bound(B.begin(),B.end(),A[i]+1)-1>=1){
      |                                                 ^
/usr/include/c++/14/bits/regex.h:1509:5: note: candidate: 'template<class _Bi_iter> bool std::__cxx11::operator>=(const sub_match<_BiIter>&, const typename std::iterator_traits<_Iter>::value_type*)'
 1509 |     operator>=(const sub_match<_Bi_iter>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/regex.h:1509:5: note:   template argument deduction/substitution failed:
a.cc:65:49: note:   '__gnu_cxx::__normal_iterator<long long int*, std::vector<long long int> >' is not derived from 'const std::__cxx11::sub_match<_BiIter>'
   65 |     if(lower_bound(B.begin(),B.end(),A[i]+1)-1>=1){
      |                                                 ^
/usr/include/c++/14/bits/regex.h:1586:5: note: candidate: 'template<class _Bi_iter> bool std::__cxx11::operator>=(const typename std::iterator_traits<_Iter>::value_type&, const sub_match<_BiIter>&)'
 1586 |     operator>=(typename iterator_traits<_Bi_iter>::value_type const& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/regex.h:1586:5: note:   template argument deduction/substitution failed:
a.cc:65:49: note:   mismatched types 'const std::__cxx11::sub_match<_BiIter>' and 'int'
   65 |     if(lower_bound(B.begin(),B.end(),A[i]+1)-1>=1){
      |                                                 ^
/usr/include/c++/14/bits/regex.h:1686:5: note: candidate: 'template<class _Bi_iter> bool std::__cxx11::operator>=(const sub_match<_BiIter>&, const typename std::iterator_traits<_Iter>::value_type&)'
 1686 |     operator>=(const sub_match<_Bi_iter>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/regex.h:1686:5: note:   template argument deduction/substitution failed:
a.cc:65:49: note:   '__gnu_cxx::__normal_iterator<long long int*, std::vector<long long int> >' is not derived from 'const std::__cxx11::sub_match<_BiIter>'
   65 |     if(lower_bound(B.begin(),B.end(),A[i]+1)-1>=1){
      |                                                 ^
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:1070:5: note: candidate: 'template<class _T1, class _T2> constexpr bool std::operator>=(const pair<_T1, _T2>&, const pair<_T1, _T2>&)'
 1070 |     operator>=(const pair<_T1, _T2>& __x, const pair<_T1, _T2>& __y)
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_pair.h:1070:5: note:   template argument deduction/substitution failed:
a.cc:65:49: note:   '__gnu_cxx::__normal_iterator<long long int*, std::vector<long long int> >' is not derived from 'const std::pair<_T1, _T2>'
   65 |     if(lower_bound(B.begin(),B.end(),A[i]+1)-1>=1){
      |                                                 ^
In file included from /usr/include/c++/14/bits/stl_algobase.h:67:
/usr/include/c++/14/bits/stl_iterator.h:476:5: note: candidate: 'template<class _Iterator> constexpr bool std::operator>=(const reverse_iterator<_Iterator>&, const reverse_iterator<_Iterator>&)'
  476 |     operator>=(const reverse_iterator<_Iterator>& __x,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:476:5: note:   template argument deduction/substitution failed:
a.cc:65:49: note:   '__gnu_cxx::__normal_iterator<long long int*, std::vector<long long int> >' is not derived from 'const std::reverse_iterator<_Iterator>'
   65 |     if(lower_bound(B.begin(),B.end(),A[i]+1)-1>=1){
      |                                                 ^
/usr/include/c++/14/bits/stl_iterator.h:520:5: note: candidate: 'template<class _IteratorL, class _IteratorR> constexpr bool std::operator>=(const reverse_iterator<_Iterator>&, const reverse_iterator<_IteratorR>&)'
  520 |     operator>=(const reverse_iterator<_IteratorL>& __x,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:520:5: note:   template argument deduction/substitution failed:
a.cc:65:49: note:   '__gnu_cxx::__normal_iterator<long long int*, std::vector<long long int> >' is not derived from 'const std::reverse_iterator<_Iterator>'
   65 |     if(lower_bound(B.begin(),B.end(),A[i]+1)-1>=1){
      |                                                 ^
/usr/include/c++/14/bits/stl_iterator.h:1724:5: note: candidate: 'template<class _IteratorL, class _IteratorR> constexpr bool std::operator>=(const move_iterator<_IteratorL>&, const move_iterator<_IteratorR>&)'
 1724 |     operator>=(const move_iterator<_IteratorL>& __x,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:1724:5: note:   template argument deduction/substitution failed:
a.cc:65:49: note:   '__gnu_cxx::__normal_iterator<long long int*, std::vector<long long int> >' is not derived from 'const std::move_iterator<_IteratorL>'
   65 |     if(lower_bound(B.begin(),B.end(),A[i]+1)-1>=1){
      |                                                 ^
/usr/include/c++/14/bits/stl_iterator.h:1781:5: note: candidate: 'template<class _Iterator> constexpr bool std::operator>=(const move_iterator<_IteratorL>&, const move_iterator<_IteratorL>&)'
 1781 |     operator>=(const move_iterator<_Iterator>& __x,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:1781:5: note:   template argument deduction/substitution failed:
a.cc:65:49: note:   '__gnu_cxx::__normal_iterator<long long int*, std::vector<long long int> >' is not derived from 'const std::move_iterator<_IteratorL>'
   65 |     if(lower_bound(B.begin(),B.end(),A[i]+1)-1>=1){
      |                                                 ^
In file included from /usr/include/c++/14/bits/basic_string.h:47,
                 from /usr/include/c++/14/string:54,
                 from /usr/include/c++/14/bitset:52,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:52:
/usr/include/c++/14/string_view:739:5: note: candidate: 'template<class _CharT, class _Traits> constexpr bool std::operator>=(basic_string_view<_CharT, _Traits>, basic_string_view<_CharT, _Traits>)'
  739 |     operator>=(basic_string_view<_CharT, _Traits> __x,
      |     ^~~~~~~~
/usr/include/c++/14/string_view:739:5: note:   template argument deduction/substitution failed:
a.cc:65:49: note:   '__gnu_cxx::__normal_iterator<long long int*, std::vector<long long int> >' is not derived from 'std::basic_string_view<_CharT, _Traits>'
   65 |     if(lower_bound(B.begin(),B.end(),A[i]+1)-1>=1){
      |                                                 ^
/usr/include/c++/14/string_view:746:5: note: candidate: 'template<class _CharT, class _Traits> constexpr bool std::operator>=(basic_string_view<_CharT, _Traits>, __type_identity_t<basic_string_view<_CharT, _Traits> >)'
  746 |     operator>=(basic_string_view<_CharT, _Traits> __x,
      |     ^~~~~~~~
/usr/include/c++/14/string_view:746:5: note:   template argument deduction/substitution failed:
a.cc:65:49: note:   '__gnu_cxx::__normal_iterator<long long int*, std::vector<long long