Compilare: user.cpp: In function ‘void Solve()’: user.cpp:38:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j< graf[i].size(); j++) ~^~~~~~~~~~~~~~~~ user.cpp: In function ‘void ReadInput()’: user.cpp:19:34: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&noduri,&muchii); ^ user.cpp:23:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&x,&y); ^