Compilare: user.cpp: In function ‘void DFS(int)’: user.cpp:29:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < G[x].size(); ++ i) ^ user.cpp: In function ‘int main()’: user.cpp:48:12: warning: unused variable ‘k’ [-Wunused-variable] int i, k, node, x, y, p; ^ user.cpp:48:15: warning: unused variable ‘node’ [-Wunused-variable] int i, k, node, x, y, p; ^ user.cpp:48:27: warning: unused variable ‘p’ [-Wunused-variable] int i, k, node, x, y, p; ^ user.cpp:49:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ user.cpp:52:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &K[i]); ^ user.cpp:56:31: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &x, &y); ^