Compilare: main.cpp: In function 'void DFS(int)': main.cpp:31:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=1; j < Graph[node].size(); ++j){ ~~^~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:10:39: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("berarii2.in", "r", stdin); ^ main.cpp:11:41: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("berarii2.out", "w", stdout); ^ main.cpp:12:32: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d", &N, &M, &P); ^ main.cpp:16:30: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &x, &y); ^ main.cpp:21:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &p); ^