Compilare: user.cpp: In function ‘void DRACU_STIE(int)’: user.cpp:28:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<v[cur].size(); i++){ ^ user.cpp: In function ‘int main()’: user.cpp:39:44: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d%d%d", &n, &m, &x, &y); ^ user.cpp:41:42: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf (fin ,"%d%d%d",&a, &b, &c); ^