Compilare: main.cpp: In function 'void dfs(int, int)': main.cpp:15:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0;i<L[nod].size();i++){ ~^~~~~~~~~~~~~~ main.cpp: In function 'int calcul(int, int, int, int)': main.cpp:42:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^