Language: C++

#include <bits/stdc++.h>
#define FOR(i,a,b) for(LL i=(a);i<(LL)(b);i++)
#define REP(i,b) FOR(i,0,b)
#define ALL(c) c.begin(),c.end()
#define PB push_back
#define FF first
#define SS second
#define cat //cout << __LINE__ << endl;
using namespace std;
typedef long long LL;
typedef double ld;
typedef LL ut;
typedef vector<ut> VI;
typedef pair<ut,ut> pr;
typedef pair<ut,pr> ppr;
typedef vector<pr> Vpr;
typedef vector<ppr> Vppr;
typedef priority_queue<pr,Vpr,greater<pr> > PQ;
const ut INF=1LL<<30;
const int SIZE=5+1e5;
map<LL,LL> searched;
Vpr edge[SIZE];
VI miniumed[SIZE];
LL minium[SIZE];
LL p[SIZE],q[SIZE],c[SIZE];
int main(){
	int N,M;
	cin.tie(0);
	cin >> N >> M;
	FOR(i,1,N+1) minium[i]=INF;
	REP(i,M){
		cin >> p[i] >> q[i] >> c[i];
		edge[p[i]].PB(pr(c[i],q[i]));
		edge[q[i]].PB(pr(c[i],p[i]));
	}
	FOR(i,1,N+1){
		sort(ALL(edge[i]));
		miniumed[i].PB(INF);
	}
	PQ qu;
	qu.push(pr(0,1));
	while(!qu.empty()){
		LL dist=qu.top().first,now=qu.top().second;
		qu.pop();
		if(miniumed[now]<dist) continue;
		searched[now]=true;
		sort(ALL(miniumed[now]));
		int ces=0;
		REP(i,edge[now].size()){
			int next=edge[now][i].second;
			int nuse=edge[now][i].first;
			while(miniumed[now][ces]<nuse) ces++;
			LL ndist=dist+(nuse!=miniumed[now][ces]);
			if(minium[next]>=ndist){
				if(minium[next]>ndist)
					miniumed[next].clear();
				minium[next]=ndist;
				miniumed[next].PB(nuse);
				qu.push(pr(ndist,next));
			}
		}
	}
	if(minium[N]==INF) cout << -1 << endl;
    else cout << minium[N] << endl;
	

	return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:45:33: error: no match for 'operator<' (operand types are 'VI' {aka 'std::vector<long long int>'} and 'LL' {aka 'long long int'})
   45 |                 if(miniumed[now]<dist) continue;
      |                    ~~~~~~~~~~~~~^~~~~
      |                                | |
      |                                | LL {aka long long int}
      |                                VI {aka 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:1143:5: note: candidate: 'template<class _BiIter> bool std::__cxx11::operator<(const sub_match<_BiIter>&, const sub_match<_BiIter>&)'
 1143 |     operator<(const sub_match<_BiIter>& __lhs, const sub_match<_BiIter>& __rhs)
      |     ^~~~~~~~
/usr/include/c++/14/bits/regex.h:1143:5: note:   template argument deduction/substitution failed:
a.cc:45:34: note:   'VI' {aka 'std::vector<long long int>'} is not derived from 'const std::__cxx11::sub_match<_BiIter>'
   45 |                 if(miniumed[now]<dist) continue;
      |                                  ^~~~
/usr/include/c++/14/bits/regex.h:1224:5: 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>&)'
 1224 |     operator<(const __sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/regex.h:1224:5: note:   template argument deduction/substitution failed:
a.cc:45:34: note:   'VI' {aka 'std::vector<long long int>'} is not derived from 'std::__cxx11::__sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>'
   45 |                 if(miniumed[now]<dist) continue;
      |                                  ^~~~
/usr/include/c++/14/bits/regex.h:1317:5: 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>&)'
 1317 |     operator<(const sub_match<_Bi_iter>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/regex.h:1317:5: note:   template argument deduction/substitution failed:
a.cc:45:34: note:   'VI' {aka 'std::vector<long long int>'} is not derived from 'const std::__cxx11::sub_match<_BiIter>'
   45 |                 if(miniumed[now]<dist) continue;
      |                                  ^~~~
/usr/include/c++/14/bits/regex.h:1391:5: note: candidate: 'template<class _Bi_iter> bool std::__cxx11::operator<(const typename std::iterator_traits<_Iter>::value_type*, const sub_match<_BiIter>&)'
 1391 |     operator<(typename iterator_traits<_Bi_iter>::value_type const* __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/regex.h:1391:5: note:   template argument deduction/substitution failed:
a.cc:45:34: note:   mismatched types 'const std::__cxx11::sub_match<_BiIter>' and 'LL' {aka 'long long int'}
   45 |                 if(miniumed[now]<dist) continue;
      |                                  ^~~~
/usr/include/c++/14/bits/regex.h:1485:5: note: candidate: 'template<class _Bi_iter> bool std::__cxx11::operator<(const sub_match<_BiIter>&, const typename std::iterator_traits<_Iter>::value_type*)'
 1485 |     operator<(const sub_match<_Bi_iter>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/regex.h:1485:5: note:   template argument deduction/substitution failed:
a.cc:45:34: note:   'VI' {aka 'std::vector<long long int>'} is not derived from 'const std::__cxx11::sub_match<_BiIter>'
   45 |                 if(miniumed[now]<dist) continue;
      |                                  ^~~~
/usr/include/c++/14/bits/regex.h:1560:5: note: candidate: 'template<class _Bi_iter> bool std::__cxx11::operator<(const typename std::iterator_traits<_Iter>::value_type&, const sub_match<_BiIter>&)'
 1560 |     operator<(typename iterator_traits<_Bi_iter>::value_type const& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/regex.h:1560:5: note:   template argument deduction/substitution failed:
a.cc:45:34: note:   mismatched types 'const std::__cxx11::sub_match<_BiIter>' and 'LL' {aka 'long long int'}
   45 |                 if(miniumed[now]<dist) continue;
      |                                  ^~~~
/usr/include/c++/14/bits/regex.h:1660:5: note: candidate: 'template<class _Bi_iter> bool std::__cxx11::operator<(const sub_match<_BiIter>&, const typename std::iterator_traits<_Iter>::value_type&)'
 1660 |     operator<(const sub_match<_Bi_iter>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/regex.h:1660:5: note:   template argument deduction/substitution failed:
a.cc:45:34: note:   'VI' {aka 'std::vector<long long int>'} is not derived from 'const std::__cxx11::sub_match<_BiIter>'
   45 |                 if(miniumed[now]<dist) continue;
      |                                  ^~~~
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: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:45:34: note:   'VI' {aka 'std::vector<long long int>'} is not derived from 'const std::pair<_T1, _T2>'
   45 |                 if(miniumed[now]<dist) continue;
      |                                  ^~~~
In file included from /usr/include/c++/14/bits/stl_algobase.h:67:
/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:45:34: note:   'VI' {aka 'std::vector<long long int>'} is not derived from 'const std::reverse_iterator<_Iterator>'
   45 |                 if(miniumed[now]<dist) continue;
      |                                  ^~~~
/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:45:34: note:   'VI' {aka 'std::vector<long long int>'} is not derived from 'const std::reverse_iterator<_Iterator>'
   45 |                 if(miniumed[now]<dist) continue;
      |                                  ^~~~
/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:45:34: note:   'VI' {aka 'std::vector<long long int>'} is not derived from 'const std::move_iterator<_IteratorL>'
   45 |                 if(miniumed[now]<dist) continue;
      |                                  ^~~~
/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:45:34: note:   'VI' {aka 'std::vector<long long int>'} is not derived from 'const std::move_iterator<_IteratorL>'
   45 |                 if(miniumed[now]<dist) continue;
      |                                  ^~~~
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: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:45:34: note:   'std::vector<long long int>' is not derived from 'std::basic_string_view<_CharT, _Traits>'
   45 |                 if(miniumed[now]<dist) continue;
      |                                  ^~~~
/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:45:34: note:   'std::vector<long long int>' is not derived from 'std::basic_string_view<_CharT, _Traits>'
   45 |                 if(miniumed[now]<dist) continue;
      |                                  ^~~~
/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:45:34: note:   mismatched types 'std::basic_string_view<_CharT, _Traits>' and 'long long int'
   45 |                 if(miniumed[