Problem	adjmatrix
User	LYM2025
Submission Time	2026-08-24 16:16:02
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

adjmatrix.cpp: In function ‘std::vector<std::vector<long long int> > bfs(ll, ll, std::vector<std::pair<long long int, long long int> >)’:
adjmatrix.cpp:7:7: error: ‘class std::vector<std::vector<long long int> >’ has no member named ‘first’
7 | adj.first--;
| ^~~~~
adjmatrix.cpp:8:7: error: ‘class std::vector<std::vector<long long int> >’ has no member named ‘second’
8 | adj.second--;
| ^~~~~~