Language: C++

#include <vector>
#include <iostream>
#include <queue>
#include <algorithm>
using namespace std;

// vector<queue<pair<int,int>>> lrd(100000,queue<pair<int,int>>());
// vector<int> x(100000,0);
// vector<bool> sumi(100000,false);
// vector<bool> kaku(100000,false);

// void sumiume(){

//     return;
// }

int main(){
    int n, m, l, r, d;
    cin >> n >> m;
    bool flag = false;
    vector<pair<int,int>> que(n+1,pair<int,int>(-1,0));
    vector<vector<int,int>> dis(n,vector<int>(0));
    vector<int> numcheck(n,-1);
    for(int i =0;i<m;i++){
        cin >> l >> r >> d;
        if(!flag){
            int check = l, d1 = 0;
            while(que[check].first!=-1){
                d1 += que[check].second;
                check = que[check].first;
            }
            int check2 = r, d2=0;
            while(que[check2].first!=-1){
                // cout << que[check2].second << endl;
                d2 += que[check2].second;
                check2 = que[check2].first;
            }
            // cout << check << check2 << endl;
            // cout << d1 << " " << d2 << endl;

            if(check == check2){
                if(d2-d1!=d){
                    flag = true;
                }
            }
            else{
                que[r].first = l;
                que[r].second = d;
            }
        }
        // lrd[l].push(pair<int,int>(r,d));
        // lrd[r].push(pair<int,int>(l,-d));
    }
    for(int i = 0;i<n;i++){
        if(que[i].first==-1) continue;
        if(!flag){
            int temp = i, d3=0;
            while(que[temp].first!=-1){
                if(numcheck[temp]!=-1){
                    d3 += numcheck[temp];
                    break;
                }
                d3+=que[temp].second;
                temp = que[temp].first;
            }
            int si = dis[temp].size();
            for(int j = 0;j<si;j++){
                if(dis[j]==d3){
                    flag=true;
                    break;
                }
            }
            dis[temp].push_back(d3);
        }
    }
    if(flag){
        cout << "No" << endl;
    }
    else{
        cout << "Yes" << endl;
    }

    return 0;
}

Compiler output:
In file included from /usr/include/c++/14/vector:66,
                 from a.cc:1:
/usr/include/c++/14/bits/stl_vector.h: In instantiation of 'struct std::_Vector_base<int, int>':
/usr/include/c++/14/bits/stl_vector.h:428:11:   required from 'class std::vector<int, int>'
  428 |     class vector : protected _Vector_base<_Tp, _Alloc>
      |           ^~~~~~
a.cc:22:49:   required from here
   22 |     vector<vector<int,int>> dis(n,vector<int>(0));
      |                                                 ^
/usr/include/c++/14/bits/stl_vector.h:87:28: error: 'int' is not a class, struct, or union type
   87 |         rebind<_Tp>::other _Tp_alloc_type;
      |                            ^~~~~~~~~~~~~~
/usr/include/c++/14/bits/stl_vector.h:89:9: error: 'int' is not a class, struct, or union type
   89 |         pointer;
      |         ^~~~~~~
/usr/include/c++/14/bits/stl_vector.h: In instantiation of 'class std::vector<int, int>':
a.cc:22:49:   required from here
   22 |     vector<vector<int,int>> dis(n,vector<int>(0));
      |                                                 ^
/usr/include/c++/14/bits/stl_vector.h:518:20: error: '_M_allocate' has not been declared in 'std::vector<int, int>::_Base'
  518 |       using _Base::_M_allocate;
      |                    ^~~~~~~~~~~
/usr/include/c++/14/bits/stl_vector.h:519:20: error: '_M_deallocate' has not been declared in 'std::vector<int, int>::_Base'
  519 |       using _Base::_M_deallocate;
      |                    ^~~~~~~~~~~~~
/usr/include/c++/14/bits/stl_vector.h:521:20: error: '_M_get_Tp_allocator' has not been declared in 'std::vector<int, int>::_Base'
  521 |       using _Base::_M_get_Tp_allocator;
      |                    ^~~~~~~~~~~~~~~~~~~
a.cc: In function 'int main()':
a.cc:22:49: error: no matching function for call to 'std::vector<std::vector<int, int> >::vector(int&, std::vector<int>)'
   22 |     vector<vector<int,int>> dis(n,vector<int>(0));
      |                                                 ^
/usr/include/c++/14/bits/stl_vector.h:707:9: note: candidate: 'template<class _InputIterator, class> std::vector<_Tp, _Alloc>::vector(_InputIterator, _InputIterator, const allocator_type&) [with <template-parameter-2-2> = _InputIterator; _Tp = std::vector<int, int>; _Alloc = std::allocator<std::vector<int, int> >]'
  707 |         vector(_InputIterator __first, _InputIterator __last,
      |         ^~~~~~
/usr/include/c++/14/bits/stl_vector.h:707:9: note:   template argument deduction/substitution failed:
a.cc:22:49: note:   deduced conflicting types for parameter '_InputIterator' ('int' and 'std::vector<int>')
   22 |     vector<vector<int,int>> dis(n,vector<int>(0));
      |                                                 ^
/usr/include/c++/14/bits/stl_vector.h:678:7: note: candidate: 'std::vector<_Tp, _Alloc>::vector(std::initializer_list<_Tp>, const allocator_type&) [with _Tp = std::vector<int, int>; _Alloc = std::allocator<std::vector<int, int> >; allocator_type = std::allocator<std::vector<int, int> >]'
  678 |       vector(initializer_list<value_type> __l,
      |       ^~~~~~
/usr/include/c++/14/bits/stl_vector.h:678:43: note:   no known conversion for argument 1 from 'int' to 'std::initializer_list<std::vector<int, int> >'
  678 |       vector(initializer_list<value_type> __l,
      |              ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~
/usr/include/c++/14/bits/stl_vector.h:659:7: note: candidate: 'std::vector<_Tp, _Alloc>::vector(std::vector<_Tp, _Alloc>&&, std::__type_identity_t<_Alloc>&) [with _Tp = std::vector<int, int>; _Alloc = std::allocator<std::vector<int, int> >; std::__type_identity_t<_Alloc> = std::allocator<std::vector<int, int> >]'
  659 |       vector(vector&& __rv, const __type_identity_t<allocator_type>& __m)
      |       ^~~~~~
/usr/include/c++/14/bits/stl_vector.h:659:23: note:   no known conversion for argument 1 from 'int' to 'std::vector<std::vector<int, int> >&&'
  659 |       vector(vector&& __rv, const __type_identity_t<allocator_type>& __m)
      |              ~~~~~~~~~^~~~
/usr/include/c++/14/bits/stl_vector.h:640:7: note: candidate: 'std::vector<_Tp, _Alloc>::vector(std::vector<_Tp, _Alloc>&&, const allocator_type&, std::false_type) [with _Tp = std::vector<int, int>; _Alloc = std::allocator<std::vector<int, int> >; allocator_type = std::allocator<std::vector<int, int> >; std::false_type = std::false_type]'
  640 |       vector(vector&& __rv, const allocator_type& __m, false_type)
      |       ^~~~~~
/usr/include/c++/14/bits/stl_vector.h:640:7: note:   candidate expects 3 arguments, 2 provided
/usr/include/c++/14/bits/stl_vector.h:635:7: note: candidate: 'std::vector<_Tp, _Alloc>::vector(std::vector<_Tp, _Alloc>&&, const allocator_type&, std::true_type) [with _Tp = std::vector<int, int>; _Alloc = std::allocator<std::vector<int, int> >; allocator_type = std::allocator<std::vector<int, int> >; std::true_type = std::true_type]'
  635 |       vector(vector&& __rv, const allocator_type& __m, true_type) noexcept
      |       ^~~~~~
/usr/include/c++/14/bits/stl_vector.h:635:7: note:   candidate expects 3 arguments, 2 provided
/usr/include/c++/14/bits/stl_vector.h:624:7: note: candidate: 'std::vector<_Tp, _Alloc>::vector(const std::vector<_Tp, _Alloc>&, std::__type_identity_t<_Alloc>&) [with _Tp = std::vector<int, int>; _Alloc = std::allocator<std::vector<int, int> >; std::__type_identity_t<_Alloc> = std::allocator<std::vector<int, int> >]'
  624 |       vector(const vector& __x, const __type_identity_t<allocator_type>& __a)
      |       ^~~~~~
/usr/include/c++/14/bits/stl_vector.h:624:28: note:   no known conversion for argument 1 from 'int' to 'const std::vector<std::vector<int, int> >&'
  624 |       vector(const vector& __x, const __type_identity_t<allocator_type>& __a)
      |              ~~~~~~~~~~~~~~^~~
/usr/include/c++/14/bits/stl_vector.h:620:7: note: candidate: 'std::vector<_Tp, _Alloc>::vector(std::vector<_Tp, _Alloc>&&) [with _Tp = std::vector<int, int>; _Alloc = std::allocator<std::vector<int, int> >]'
  620 |       vector(vector&&) noexcept = default;
      |       ^~~~~~
/usr/include/c++/14/bits/stl_vector.h:620:7: note:   candidate expects 1 argument, 2 provided
/usr/include/c++/14/bits/stl_vector.h:601:7: note: candidate: 'std::vector<_Tp, _Alloc>::vector(const std::vector<_Tp, _Alloc>&) [with _Tp = std::vector<int, int>; _Alloc = std::allocator<std::vector<int, int> >]'
  601 |       vector(const vector& __x)
      |       ^~~~~~
/usr/include/c++/14/bits/stl_vector.h:601:7: note:   candidate expects 1 argument, 2 provided
/usr/include/c++/14/bits/stl_vector.h:569:7: note: candidate: 'std::vector<_Tp, _Alloc>::vector(size_type, const value_type&, const allocator_type&) [with _Tp = std::vector<int, int>; _Alloc = std::allocator<std::vector<int, int> >; size_type = long unsigned int; value_type = std::vector<int, int>; allocator_type = std::allocator<std::vector<int, int> >]'
  569 |       vector(size_type __n, const value_type& __value,
      |       ^~~~~~
/usr/include/c++/14/bits/stl_vector.h:569:47: note:   no known conversion for argument 2 from 'std::vector<int>' to 'const std::vector<std::vector<int, int> >::value_type&' {aka 'const std::vector<int, int>&'}
  569 |       vector(size_type __n, const value_type& __value,
      |                             ~~~~~~~~~~~~~~~~~~^~~~~~~
/usr/include/c++/14/bits/stl_vector.h:556:7: note: candidate: 'std::vector<_Tp, _Alloc>::vector(size_type, const allocator_type&) [with _Tp = std::vector<int, int>; _Alloc = std::allocator<std::vector<int, int> >; size_type = long unsigned int; allocator_type = std::allocator<std::vector<int, int> >]'
  556 |       vector(size_type __n, const allocator_type& __a = allocator_type())
      |       ^~~~~~
/usr/include/c++/14/bits/stl_vector.h:556:51: note:   no known conversion for argument 2 from 'std::vector<int>' to 'const std::vector<std::vector<int, int> >::allocator_type&' {aka 'const std::allocator<std::vector<int, int> >&'}
  556 |       vector(size_type __n, const allocator_type& __a = allocator_type())
      |                             ~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/14/bits/stl_vector.h:542:7: note: candidate: 'std::vector<_Tp, _Alloc>::vector(const allocator_type&) [with _Tp = std::vector<int, int>; _Alloc = std::allocator<std::vector<int, int> >; allocator_type = std::allocator<std::vector<int, int> >]'
  542 |       vector(const allocator_type& __a) _GLIBCXX_NOEXCEPT
      |       ^~~~~~
/usr/include/c++/14/bits/stl_vector.h:542:7: note:   candidate expects 1 argument, 2 provided
/usr/include/c++/14/bits/stl_vector.h:531:7: note: candidate: 'std::vector<_Tp, _Alloc>::vector() [with _Tp = std::vector<int, int>; _Alloc = std::allocator<std::vector<int, int> >]'
  531 |       vector() = default;
      |       ^~~~~~
/usr/include/c++/14/bits/stl_vector.h:531:7: note:   candidate expects 0 arguments, 2 provided
a.cc:68:26: error: no match for 'operator==' (operand types are '__gnu_cxx::__alloc_traits<std::allocator<std::vector<int, int> >, std::vector<int, int> >::value_type' {aka 'std::vector<int, int>'} and 'int')
   68 |                 if(dis[j]==d3){
In file included from /usr/include/c++/14/bits/stl_algobase.h:64,
                 from /usr/include/c++/14/vector:62:
/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:68:28: note:   '__gnu_cxx::__alloc_traits<std::allocator<std::vector<int, int> >, std::vector<int, int> >::value_type' {aka 'std::vector<int, int>'} is not derived from 'const std::pair<_T1, _T2>'
   68 |                 if(dis[j]==d3){
      |                            ^~
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>& _