Compilare: main.cpp: In function 'long long int dfs(long long int)': main.cpp:15:25: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 15 | for(long long i=0; i<g[x].size(); i++) | ~^~~~~~~~~~~~ main.cpp:27:1: warning: no return statement in function returning non-void [-Wreturn-type] 27 | } | ^