Compilare: main.cpp: In function 'int dfs(int)': main.cpp:11:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 11 | for(int i=0; i<v[x].size(); i++) | ~^~~~~~~~~~~~ main.cpp:18:1: warning: no return statement in function returning non-void [-Wreturn-type] 18 | } | ^ main.cpp:8:5: warning: infinite recursion detected [-Winfinite-recursion] 8 | int dfs(int x) | ^~~ main.cpp:15:16: note: recursive call 15 | dfs(v[x][i]); | ~~~^~~~~~~~~