Compilare: user.cpp: In function ‘void dfs(int)’: user.cpp:45:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 1; i < V[x].size(); ++ i) ^ user.cpp: In function ‘void brut()’: user.cpp:67:31: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &x, &y); ^ user.cpp: In function ‘int main()’: user.cpp:89:34: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d", &n, &m, &k); ^ user.cpp:91:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &t[i]); ^