Compilare: main.cpp: In function 'void dfs(int, int)': main.cpp:45:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 45 | for(int i=0;i<g[x].size();i++) | ~^~~~~~~~~~~~