Compilare: main.cpp: In function 'void dfs(int)': main.cpp:18:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 18 | for (int i = 0; i < g[x].size(); i++) | ~~^~~~~~~~~~~~~ main.cpp: In function 'void dfs2(int)': main.cpp:45:26: 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[nod].size(); i++) | ~~^~~~~~~~~~~~~~~