Compilare: user.cpp:12:18: warning: overflow in implicit constant conversion [-Woverflow] int cate, mins = 9999999999; ^ user.cpp: In function ‘void dfs1(int, int)’: user.cpp:33:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < v[nod].size(); i++) ^ user.cpp: In function ‘void dfs2(int, int)’: user.cpp:47:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < v[nod].size(); i++) ^ user.cpp: In function ‘int main()’: user.cpp:60:33: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d %d", &n, &k); ^ user.cpp:65:37: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d %d", &x, &y); ^ user.cpp:71:33: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &r[i]); ^