Compilare: user.cpp: In function ‘int main()’: user.cpp:46:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<mat[x].size();++i) ^ user.cpp:15:34: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d %d %d", &n,&p,&k); ^ user.cpp:17:42: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d %d", &timpp[i],&capp[i]); ^ user.cpp:28:29: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d %d",&x,&y); ^