Compilare: main.cpp: In function 'int ciclu(int)': main.cpp:20:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<v[nod].size();i++) ~^~~~~~~~~~~~~~ main.cpp:45:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ main.cpp: In function 'int solve_ciclu()': main.cpp:50:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^