Compilare: main.cpp: In function 'int main()': main.cpp:36:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 36 | for(int i = 0; i < adj[crt].size(); ++i){ | ~~^~~~~~~~~~~~~~~~~ main.cpp:44:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation] 44 | for(int i = 2; i <= N; ++i) | ^~~ main.cpp:48:2: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for' 48 | return 0; | ^~~~~~