Compilare: main.cpp: In function 'int main()': main.cpp:60:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0; j<=intrb[i].size()-1; ++j) ~^~~~~~~~~~~~~~~~~~~ main.cpp:66:37: warning: format '%d' expects argument of type 'int', but argument 3 has type 'long long int' [-Wformat=] fprintf(fout, "%d\n", ans[i]); ^ main.cpp:43:31: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d", &n,&m); ^ main.cpp:45:33: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &a[i]); ^ main.cpp:48:35: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d", &x,&y); ^