Language: C++

#include<bits/stdc++.h>
using namespace std;
#define rep(i,j,n) for(int i=(int)(j);i<(int)(n);i++)
#define REP(i,j,n) for(int i=(int)(j);i<=(int)(n);i++)
#define MOD 1000000007
#define int long long
#define ALL(a) (a).begin(),(a).end()
#define vi vector<int>
#define vii vector<vi>
#define pii pair<int,int>
#define priq priority_queue<int>
#define disup(A,key) distance(A.begin(),upper_bound(ALL(A),(int)(key)))
#define dislow(A,key) distance(A.begin(),lower_bound(ALL(A),(int)(key)))
#define tii tuple<int,int,int>
#define Priq priority_queue<int,vi,greater<int>>
#define pb push_back
#define mp make_pair
#define INF (1ll<<60)
signed main(){
  int N,M; cin>>N>>M;
  vector<vector<pii>> A(N);
  rep(i,0,M){
    int L,R,D; cin>>L>>R>>D;
    A[L-1].pb(mp(R-1,D));
    A[R-1].pb(mp(L-1,-D));
  }
  vi F(N,INF);
  F[0]=0;
  queue<pii> Q;
  Q.push(mp(0,0));
  while(Q.size()>0){
    int X=Q.front().first,Y=Q.front().second; Q.pop();
    rep(i,0,A[X].size()){
      int P=A[X][i].first,R=Y+A[X][i].second;
      if(F[P]==INF){
        F[P]=R;
        Q.push(mp(P,R));
      }
      else{
        if(F[P]!=Y){
          cout<<"No"<<endl;
          return 0;
        }
      }
    }
  }
  sort(ALL(A));
  while(1){
    if(A[A.size()-1]==-INF) A.pop_back();
    else break;
  }
  if(A.size()<=1||A[A.size()-1]-A[0]<=1000000000)
    cout<<"Yes"<<endl;
  else
    cout<<"No"<<endl;
  }


Compiler output:
a.cc: In function 'int main()':
a.cc:49:21: error: no match for 'operator==' (operand types are '__gnu_cxx::__alloc_traits<std::allocator<std::vector<std::pair<long long int, long long int> > >, std::vector<std::pair<long long int, long long int> > >::value_type' {aka 'std::vector<std::pair<long long int, long long int> >'} and 'long long int')
   49 |     if(A[A.size()-1]==-INF) A.pop_back();
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:1103:5: note: candidate: 'template<class _BiIter> bool std::__cxx11::operator==(const sub_match<_BiIter>&, const sub_match<_BiIter>&)'
 1103 |     operator==(const sub_match<_BiIter>& __lhs, const sub_match<_BiIter>& __rhs)
      |     ^~~~~~~~
/usr/include/c++/14/bits/regex.h:1103:5: note:   template argument deduction/substitution failed:
a.cc:18:21: note:   '__gnu_cxx::__alloc_traits<std::allocator<std::vector<std::pair<long long int, long long int> > >, std::vector<std::pair<long long int, long long int> > >::value_type' {aka 'std::vector<std::pair<long long int, long long int> >'} is not derived from 'const std::__cxx11::sub_match<_BiIter>'
   18 | #define INF (1ll<<60)
      |                     ^
a.cc:49:24: note: in expansion of macro 'INF'
   49 |     if(A[A.size()-1]==-INF) A.pop_back();
      |                        ^~~
/usr/include/c++/14/bits/regex.h:1199:5: 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>&)'
 1199 |     operator==(const __sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/regex.h:1199:5: note:   template argument deduction/substitution failed:
a.cc:18:21: note:   '__gnu_cxx::__alloc_traits<std::allocator<std::vector<std::pair<long long int, long long int> > >, std::vector<std::pair<long long int, long long int> > >::value_type' {aka 'std::vector<std::pair<long long int, long long int> >'} is not derived from 'std::__cxx11::__sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>'
   18 | #define INF (1ll<<60)
      |                     ^
a.cc:49:24: note: in expansion of macro 'INF'
   49 |     if(A[A.size()-1]==-INF) A.pop_back();
      |                        ^~~
/usr/include/c++/14/bits/regex.h:1274:5: 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>&)'
 1274 |     operator==(const sub_match<_Bi_iter>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/regex.h:1274:5: note:   template argument deduction/substitution failed:
a.cc:18:21: note:   '__gnu_cxx::__alloc_traits<std::allocator<std::vector<std::pair<long long int, long long int> > >, std::vector<std::pair<long long int, long long int> > >::value_type' {aka 'std::vector<std::pair<long long int, long long int> >'} is not derived from 'const std::__cxx11::sub_match<_BiIter>'
   18 | #define INF (1ll<<60)
      |                     ^
a.cc:49:24: note: in expansion of macro 'INF'
   49 |     if(A[A.size()-1]==-INF) A.pop_back();
      |                        ^~~
/usr/include/c++/14/bits/regex.h:1366:5: note: candidate: 'template<class _Bi_iter> bool std::__cxx11::operator==(const typename std::iterator_traits<_Iter>::value_type*, const sub_match<_BiIter>&)'
 1366 |     operator==(typename iterator_traits<_Bi_iter>::value_type const* __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/regex.h:1366:5: note:   template argument deduction/substitution failed:
a.cc:18:21: note:   mismatched types 'const std::__cxx11::sub_match<_BiIter>' and 'long long int'
   18 | #define INF (1ll<<60)
      |                     ^
a.cc:49:24: note: in expansion of macro 'INF'
   49 |     if(A[A.size()-1]==-INF) A.pop_back();
      |                        ^~~
/usr/include/c++/14/bits/regex.h:1441:5: note: candidate: 'template<class _Bi_iter> bool std::__cxx11::operator==(const sub_match<_BiIter>&, const typename std::iterator_traits<_Iter>::value_type*)'
 1441 |     operator==(const sub_match<_Bi_iter>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/regex.h:1441:5: note:   template argument deduction/substitution failed:
a.cc:18:21: note:   '__gnu_cxx::__alloc_traits<std::allocator<std::vector<std::pair<long long int, long long int> > >, std::vector<std::pair<long long int, long long int> > >::value_type' {aka 'std::vector<std::pair<long long int, long long int> >'} is not derived from 'const std::__cxx11::sub_match<_BiIter>'
   18 | #define INF (1ll<<60)
      |                     ^
a.cc:49:24: note: in expansion of macro 'INF'
   49 |     if(A[A.size()-1]==-INF) A.pop_back();
      |                        ^~~
/usr/include/c++/14/bits/regex.h:1534:5: note: candidate: 'template<class _Bi_iter> bool std::__cxx11::operator==(const typename std::iterator_traits<_Iter>::value_type&, const sub_match<_BiIter>&)'
 1534 |     operator==(typename iterator_traits<_Bi_iter>::value_type const& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/regex.h:1534:5: note:   template argument deduction/substitution failed:
a.cc:18:21: note:   mismatched types 'const std::__cxx11::sub_match<_BiIter>' and 'long long int'
   18 | #define INF (1ll<<60)
      |                     ^
a.cc:49:24: note: in expansion of macro 'INF'
   49 |     if(A[A.size()-1]==-INF) A.pop_back();
      |                        ^~~
/usr/include/c++/14/bits/regex.h:1613:5: note: candidate: 'template<class _Bi_iter> bool std::__cxx11::operator==(const sub_match<_BiIter>&, const typename std::iterator_traits<_Iter>::value_type&)'
 1613 |     operator==(const sub_match<_Bi_iter>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/regex.h:1613:5: note:   template argument deduction/substitution failed:
a.cc:18:21: note:   '__gnu_cxx::__alloc_traits<std::allocator<std::vector<std::pair<long long int, long long int> > >, std::vector<std::pair<long long int, long long int> > >::value_type' {aka 'std::vector<std::pair<long long int, long long int> >'} is not derived from 'const std::__cxx11::sub_match<_BiIter>'
   18 | #define INF (1ll<<60)
      |                     ^
a.cc:49:24: note: in expansion of macro 'INF'
   49 |     if(A[A.size()-1]==-INF) A.pop_back();
      |                        ^~~
/usr/include/c++/14/bits/regex.h:2186:5: note: candidate: 'template<class _Bi_iter, class _Alloc> bool std::__cxx11::operator==(const match_results<_BiIter, _Alloc>&, const match_results<_BiIter, _Alloc>&)'
 2186 |     operator==(const match_results<_Bi_iter, _Alloc>& __m1,
      |     ^~~~~~~~
/usr/include/c++/14/bits/regex.h:2186:5: note:   template argument deduction/substitution failed:
a.cc:18:21: note:   '__gnu_cxx::__alloc_traits<std::allocator<std::vector<std::pair<long long int, long long int> > >, std::vector<std::pair<long long int, long long int> > >::value_type' {aka 'std::vector<std::pair<long long int, long long int> >'} is not derived from 'const std::__cxx11::match_results<_BiIter, _Alloc>'
   18 | #define INF (1ll<<60)
      |                     ^
a.cc:49:24: note: in expansion of macro 'INF'
   49 |     if(A[A.size()-1]==-INF) A.pop_back();
      |                        ^~~
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:1033:5: note: candidate: 'template<class _T1, class _T2> constexpr bool std::operator==(const pair<_T1, _T2>&, const pair<_T1, _T2>&)'
 1033 |     operator==(const pair<_T1, _T2>& __x, const pair<_T1, _T2>& __y)
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_pair.h:1033:5: note:   template argument deduction/substitution failed:
a.cc:18:21: note:   '__gnu_cxx::__alloc_traits<std::allocator<std::vector<std::pair<long long int, long long int> > >, std::vector<std::pair<long long int, long long int> > >::value_type' {aka 'std::vector<std::pair<long long int, long long int> >'} is not derived from 'const std::pair<_T1, _T2>'
   18 | #define INF (1ll<<60)
      |                     ^
a.cc:49:24: note: in expansion of macro 'INF'
   49 |     if(A[A.size()-1]==-INF) A.pop_back();
      |                        ^~~
In file included from /usr/include/c++/14/bits/stl_algobase.h:67:
/usr/include/c++/14/bits/stl_iterator.h:441:5: note: candidate: 'template<class _Iterator> constexpr bool std::operator==(const reverse_iterator<_Iterator>&, const reverse_iterator<_Iterator>&)'
  441 |     operator==(const reverse_iterator<_Iterator>& __x,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:441:5: note:   template argument deduction/substitution failed:
a.cc:18:21: note:   '__gnu_cxx::__alloc_traits<std::allocator<std::vector<std::pair<long long int, long long int> > >, std::vector<std::pair<long long int, long long int> > >::value_type' {aka 'std::vector<std::pair<long long int, long long int> >'} is not derived from 'const std::reverse_iterator<_Iterator>'
   18 | #define INF (1ll<<60)
      |                     ^
a.cc:49:24: note: in expansion of macro 'INF'
   49 |     if(A[A.size()-1]==-INF) A.pop_back();
      |                        ^~~
/usr/include/c++/14/bits/stl_iterator.h:486:5: note: candidate: 'template<class _IteratorL, class _IteratorR> constexpr bool std::operator==(const reverse_iterator<_Iterator>&, const reverse_iterator<_IteratorR>&)'
  486 |     operator==(const reverse_iterator<_IteratorL>& __x,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:486:5: note:   template argument deduction/substitution failed:
a.cc:18:21: note:   '__gnu_cxx::__alloc_traits<std::allocator<std::vector<std::pair<long long int, long long int> > >, std::vector<std::pair<long long int, long long int> > >::value_type' {aka 'std::vector<std::pair<long long int, long long int> >'} is not derived from 'const std::reverse_iterator<_Iterator>'
   18 | #define INF (1ll<<60)
      |                     ^
a.cc:49:24: note: in expansion of macro 'INF'
   49 |     if(A[A.size()-1]==-INF) A.pop_back();