Compilare: main.cpp: In function 'int dfs(int)': main.cpp:16:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 16 | for (int i = 0; i < G[v].size(); i++) | ~~^~~~~~~~~~~~~ main.cpp:23:1: warning: no return statement in function returning non-void [-Wreturn-type] 23 | } | ^ main.cpp:13:5: warning: infinite recursion detected [-Winfinite-recursion] 13 | int dfs(int v) | ^~~ main.cpp:20:16: note: recursive call 20 | dfs(G[v][i]); | ~~~^~~~~~~~~