Compilare: main.cpp: In function 'int dfs(int, int)': main.cpp:19:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 19 | for(int j=0;j<ad[nod].size();j++){ | ~^~~~~~~~~~~~~~~ main.cpp:25:1: warning: no return statement in function returning non-void [-Wreturn-type] 25 | } | ^ main.cpp:14:5: warning: infinite recursion detected [-Winfinite-recursion] 14 | int dfs(int nod, int niv){ | ^~~ main.cpp:20:12: note: recursive call 20 | dfs(ad[nod][j], niv+1); | ~~~^~~~~~~~~~~~~~~~~~~