Compilare: user.cpp: In function ‘int dfs(int, int)’: user.cpp:24:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘int izo(int, int)’: user.cpp:76:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘int ch(int)’: user.cpp:99:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<K;i++) if(C[i].size()!=p) return 0; ^