Compilare: main.cpp: In function 'int main()': main.cpp:37:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 37 | for(int i = 0; i < adj[crt].size(); ++i){ | ~~^~~~~~~~~~~~~~~~~ main.cpp:43:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation] 43 | for(int i = 2; i <= N; ++i) | ^~~ main.cpp:47:2: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for' 47 | return 0; | ^~~~~~ main.cpp:32:9: warning: unused variable 'crt' [-Wunused-variable] 32 | int crt ; | ^~~