Compilare: main.cpp: In function 'void dfs(int, int)': main.cpp:22:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 22 | for ( int i = 0; i < G[u].size(); ++i ) { | ~~^~~~~~~~~~~~~ main.cpp:28:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 28 | for ( int i = 0; i < G[u].size(); ++i ) { | ~~^~~~~~~~~~~~~ main.cpp:19:7: warning: unused variable 'f' [-Wunused-variable] 19 | int f[10] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0}; | ^ main.cpp: In function 'int main()': main.cpp:48:17: warning: 'pos' may be used uninitialized in this function [-Wmaybe-uninitialized] 48 | int mn = 1e9, pos; | ^~~