Language: C++

#include<bits/stdc++.h>
#define int long long
#define rep(i,n) for(int i=0; i<n;i++)
using namespace std;
#define MAX 1e9
int INF=MAX*MAX;
 
typedef pair<int,int> pii;
typedef pair<pii,pii> piii;
//vector<vector<long long> >d(501,vector<long long>(51,INF));
int d[501][2][51];
signed main(){
	rep(i,501)rep(j,2)rep(k,51)d[i][j][k]=INF;
    int n,m;  cin>>n>>m;
    vector<vector<pii> >edge(n,vector<pii>());
    rep(i,m){
        int a,b,c; cin>>a>>b>>c;
        --a,--b;
        edge[a].push_back(pii(b,c));
        edge[b].push_back(pii(a,c));
    }
    int v0,a,b,c; cin>>v0>>a>>b>>c;
    priority_queue<piii,vector<piii>,greater<piii> >que;
    d[0][0][v0]=0;
    que.push(piii(pii(0,0),{0,v0}));
    while(!que.empty()){
        piii now=que.top(); que.pop();
        int v=now.second.second;
		int t=now.second.first;
        int _v=(v*a+b)%c;
        if(d[now.first.second][t][v]<now.first.first)continue;
        for(int i=0; i<edge[now.first.second].size();i++){
			int nt=t|edge[now.first.second].first;
            pii next=edge[now.first.second][i];
            if(d[next.first][nt][_v]<now.first.first+next.second*v)continue;
            d[next.first][nt][_v]=now.first.first+next.second*v;
            que.push(piii(pii(d[next.first][_v],next.first),{nt,_v}));
        }
    }
    int ans=INF;
	rep(i,51)ans=min(ans,d[0][1][i]);
/*    rep(i,51)if(d[n-1][i]!=INF){
        vector<vector<long long> >_d(501,vector<long long>(51,INF));
        _d[n-1][i]=d[n-1][i];
        que.push(piii(pii(d[n-1][i],n-1),i));
        while(!que.empty()){
            piii now=que.top(); que.pop();
            int v=now.second;
            int _v=(v*a+b)%c;
            if(_d[now.first.second][v]<now.first.first)continue;
            for(int i=0; i<edge[now.first.second].size();i++){
                pii next=edge[now.first.second][i];
                if(_d[next.first][_v]<now.first.first+next.second*v)continue;
                _d[next.first][_v]=now.first.first+next.second*v;
                que.push(piii(pii(_d[next.first][_v],next.first),_v));
            }
        }
        rep(i,51)ans=min(ans,_d[0][i]);
    }	*/
    cout<<ans<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:33:57: error: '__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 'class std::vector<std::pair<long long int, long long int> >'} has no member named 'first'
   33 |                         int nt=t|edge[now.first.second].first;
      |                                                         ^~~~~
a.cc:37:59: error: no matching function for call to 'std::pair<long long int, long long int>::pair(long long int [51], long long int&)'
   37 |             que.push(piii(pii(d[next.first][_v],next.first),{nt,_v}));
      |                                                           ^
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,
                 from a.cc:1:
/usr/include/c++/14/bits/stl_pair.h:913:28: note: candidate: 'template<class _U1, class _U2, typename std::enable_if<(std::_PCC<((! std::is_same<long long int, _U1>::value) || (! std::is_same<long long int, _U2>::value)), long long int, long long int>::_MoveConstructiblePair<_U1, _U2>() && (! std::_PCC<((! std::is_same<long long int, _U1>::value) || (! std::is_same<long long int, _U2>::value)), long long int, long long int>::_ImplicitlyMoveConvertiblePair<_U1, _U2>())), bool>::type <anonymous> > constexpr std::pair<_T1, _T2>::pair(std::pair<_U1, _U2>&&) [with _U2 = _U1; typename std::enable_if<(std::_PCC<((! std::is_same<_T1, _U1>::value) || (! std::is_same<_T2, _U2>::value)), _T1, _T2>::_MoveConstructiblePair<_U1, _U2>() && (! std::_PCC<((! std::is_same<_T1, _U1>::value) || (! std::is_same<_T2, _U2>::value)), _T1, _T2>::_ImplicitlyMoveConvertiblePair<_U1, _U2>())), bool>::type <anonymous> = _U2; _T1 = long long int; _T2 = long long int]'
  913 |         explicit constexpr pair(pair<_U1, _U2>&& __p)
      |                            ^~~~
/usr/include/c++/14/bits/stl_pair.h:913:28: note:   candidate expects 1 argument, 2 provided
/usr/include/c++/14/bits/stl_pair.h:902:19: note: candidate: 'template<class _U1, class _U2, typename std::enable_if<(std::_PCC<((! std::is_same<long long int, _U1>::value) || (! std::is_same<long long int, _U2>::value)), long long int, long long int>::_MoveConstructiblePair<_U1, _U2>() && std::_PCC<((! std::is_same<long long int, _U1>::value) || (! std::is_same<long long int, _U2>::value)), long long int, long long int>::_ImplicitlyMoveConvertiblePair<_U1, _U2>()), bool>::type <anonymous> > constexpr std::pair<_T1, _T2>::pair(std::pair<_U1, _U2>&&) [with _U2 = _U1; typename std::enable_if<(std::_PCC<((! std::is_same<_T1, _U1>::value) || (! std::is_same<_T2, _U2>::value)), _T1, _T2>::_MoveConstructiblePair<_U1, _U2>() && std::_PCC<((! std::is_same<_T1, _U1>::value) || (! std::is_same<_T2, _U2>::value)), _T1, _T2>::_ImplicitlyMoveConvertiblePair<_U1, _U2>()), bool>::type <anonymous> = _U2; _T1 = long long int; _T2 = long long int]'
  902 |         constexpr pair(pair<_U1, _U2>&& __p)
      |                   ^~~~
/usr/include/c++/14/bits/stl_pair.h:902:19: note:   candidate expects 1 argument, 2 provided
/usr/include/c++/14/bits/stl_pair.h:891:28: note: candidate: 'template<class _U1, class _U2, typename std::enable_if<(_MoveConstructiblePair<_U1, _U2>() && (! _ImplicitlyMoveConvertiblePair<_U1, _U2>())), bool>::type <anonymous> > constexpr std::pair<_T1, _T2>::pair(_U1&&, _U2&&) [with _U2 = _U1; typename std::enable_if<(std::_PCC<true, _T1, _T2>::_MoveConstructiblePair<_U1, _U2>() && (! std::_PCC<true, _T1, _T2>::_ImplicitlyMoveConvertiblePair<_U1, _U2>())), bool>::type <anonymous> = _U2; _T1 = long long int; _T2 = long long int]'
  891 |         explicit constexpr pair(_U1&& __x, _U2&& __y)
      |                            ^~~~
/usr/include/c++/14/bits/stl_pair.h:891:28: note:   template argument deduction/substitution failed:
/usr/include/c++/14/bits/stl_pair.h:890:38: error: no type named 'type' in 'struct std::enable_if<false, bool>'
  890 |                          bool>::type=false>
      |                                      ^~~~~
/usr/include/c++/14/bits/stl_pair.h:881:19: note: candidate: 'template<class _U1, class _U2, typename std::enable_if<(_MoveConstructiblePair<_U1, _U2>() && _ImplicitlyMoveConvertiblePair<_U1, _U2>()), bool>::type <anonymous> > constexpr std::pair<_T1, _T2>::pair(_U1&&, _U2&&) [with _U2 = _U1; typename std::enable_if<(std::_PCC<true, _T1, _T2>::_MoveConstructiblePair<_U1, _U2>() && std::_PCC<true, _T1, _T2>::_ImplicitlyMoveConvertiblePair<_U1, _U2>()), bool>::type <anonymous> = _U2; _T1 = long long int; _T2 = long long int]'
  881 |         constexpr pair(_U1&& __x, _U2&& __y)
      |                   ^~~~
/usr/include/c++/14/bits/stl_pair.h:881:19: note:   template argument deduction/substitution failed:
/usr/include/c++/14/bits/stl_pair.h:880:38: error: no type named 'type' in 'struct std::enable_if<false, bool>'
  880 |                          bool>::type=true>
      |                                      ^~~~
/usr/include/c++/14/bits/stl_pair.h:869:9: note: candidate: 'template<class _U2, typename std::enable_if<std::__and_<std::is_pointer<long long int>, std::__not_<std::is_reference<_Tp> >, std::is_constructible<long long int, _U1>, std::__not_<std::is_constructible<long long int, const _U1&> >, std::__not_<std::is_convertible<_U1, long long int> > >::value, bool>::type <anonymous> > constexpr std::pair<_T1, _T2>::pair(__zero_as_null_pointer_constant, _U2&&, ...) [with typename std::enable_if<std::__and_<std::is_pointer<_Tp>, std::__not_<std::is_reference<_U1> >, std::is_constructible<_T2, _U2>, std::__not_<std::is_constructible<_T1, const _U1&> >, std::__not_<std::is_convertible<_U2, _T2> > >::value, bool>::type <anonymous> = _U2; _T1 = long long int; _T2 = long long int]'
  869 |         pair(__zero_as_null_pointer_constant, _U2&& __y, ...)
      |         ^~~~
/usr/include/c++/14/bits/stl_pair.h:869:9: note:   template argument deduction/substitution failed:
/usr/include/c++/14/bits/stl_pair.h:866:38: error: no type named 'type' in 'struct std::enable_if<false, bool>'
  866 |                              bool> = false>
      |                                      ^~~~~
/usr/include/c++/14/bits/stl_pair.h:856:9: note: candidate: 'template<class _U2, typename std::enable_if<std::__and_<std::is_pointer<long long int>, std::__not_<std::is_reference<_Tp> >, std::is_constructible<long long int, _U1>, std::__not_<std::is_constructible<long long int, const _U1&> >, std::is_convertible<_U1, long long int> >::value, bool>::type <anonymous> > constexpr std::pair<_T1, _T2>::pair(__zero_as_null_pointer_constant, _U2&&, ...) [with typename std::enable_if<std::__and_<std::is_pointer<_Tp>, std::__not_<std::is_reference<_U1> >, std::is_constructible<_T2, _U2>, std::__not_<std::is_constructible<_T1, const _U1&> >, std::is_convertible<_U2, _T2> >::value, bool>::type <anonymous> = _U2; _T1 = long long int; _T2 = long long int]'
  856 |         pair(__zero_as_null_pointer_constant, _U2&& __y, ...)
      |         ^~~~
/usr/include/c++/14/bits/stl_pair.h:856:9: note:   template argument deduction/substitution failed:
/usr/include/c++/14/bits/stl_pair.h:853:38: error: no type named 'type' in 'struct std::enable_if<false, bool>'
  853 |                              bool> = true>
      |                                      ^~~~
/usr/include/c++/14/bits/stl_pair.h:843:9: note: candidate: 'template<class _U1, typename std::enable_if<std::__and_<std::__not_<std::is_reference<_Tp> >, std::is_pointer<long long int>, std::is_constructible<long long int, _U1>, std::__not_<std::is_constructible<long long int, const _U1&> >, std::__not_<std::is_convertible<_U1, long long int> > >::value, bool>::type <anonymous> > constexpr std::pair<_T1, _T2>::pair(_U1&&, __zero_as_null_pointer_constant, ...) [with typename std::enable_if<std::__and_<std::__not_<std::is_reference<_U1> >, std::is_pointer<_T2>, std::is_constructible<_T1, _U1>, std::__not_<std::is_constructible<_T1, const _U1&> >, std::__not_<std::is_convertible<_U1, _T1> > >::value, bool>::type <anonymous> = _U1; _T1 = long long int; _T2 = long long int]'
  843 |         pair(_U1&& __x, __zero_as_null_pointer_constant, ...)
      |         ^~~~
/usr/include/c++/14/bits/stl_pair.h:843:9: note:   template argument deduction/substitution failed:
/usr/include/c++/14/bits/stl_pair.h:840:38: error: no type named 'type' in 'struct std::enable_if<false, bool>'
  840 |                              bool> = false>
      |                                      ^~~~~
/usr/include/c++/14/bits/stl_pair.h:830:9: note: candidate: 'template<class _U1, typename std::enable_if<std::__and_<std::__not_<std::is_reference<_Tp> >, std::is_pointer<long long int>, std::is_constructible<long long int, _U1>, std::__not_<std::is_constructible<long long int, const _U1&> >, std::is_convertible<_U1, long long int> >::value, bool>::type <anonymous> > constexpr std::pair<_T1, _T2>::pair(_U1&&, __zero_as_null_pointer_constant, ...) [with typename std::enable_if<std::__and_<std::__not_<std::is_reference<_U1> >, std::is_pointer<_T2>, std::is_constructible<_T1, _U1>, std::__not_<std::is_constructible<_T1, const _U1&> >, std::is_convertible<_U1, _T1> >::value, bool>::type <anonymous> = _U1; _T1 = long long int; _T2 = long long int]'
  830 |         pair(_U1&& __x, __zero_as_null_pointer_constant, ...)
      |         ^~~~
/usr/include/c++/14/bits/stl_pair.h:830:9: note:   template argument deduction/substitution failed:
/usr/include/c++/14/bits/stl_pair.h:827:38: error: no type named 'type' in 'struct std::enable_if<false, bool>'
  827 |                              bool> = true>
      |                                      ^~~~
/usr/include/c++/14/bits/stl_pair.h:789:28: note: candidate: 'template<class _U1, class _U2, typename std::enable_if<(std::_PCC<((! std::is_same<long long int, _U1>::value) || (! std::is_same<long long int, _U2>::value)), long long int, long long int>::_ConstructiblePair<_U1, _U2>() && (! std::_PCC<((! std::is_same<long long int, _U1>::value) || (! std::is_same<long long int, _U2>::value)), long long int, long long int>::_I