Compilare: user.cpp: In function ‘void DFS(int, int)’: user.cpp:45:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0; i<L[nod].size(); ++i) ^ user.cpp: In function ‘int main()’: user.cpp:26:33: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d %d", &n, &m); ^ user.cpp:29:30: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &x); ^ user.cpp: In function ‘void rez()’: user.cpp:89:37: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d %d", &a, &b); ^