Compilare: main.c: In function 'main': main.c:34:25: warning: format '%d' expects argument of type 'int', but argument 3 has type 'long long int' [-Wformat=] fprintf(fout, "%d\n", ans); ^ main.c:23:19: warning: unused variable 'k0' [-Wunused-variable] lli n, k, n0, k0; ^~ main.c:23:15: warning: unused variable 'n0' [-Wunused-variable] lli n, k, n0, k0; ^~ main.c:25:5: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &t); ^~~~~~~~~~~~~~~~~~~~~ main.c:28:9: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%lld %lld", &n, &k); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~