Compilare: main.c: In function 'main': main.c:113:21: warning: format '%lld' expects argument of type 'long long int', but argument 3 has type 'int' [-Wformat=] fprintf(fout, "%lld %lld\n", max_cost, max_nap % 1000000007); ^ main.c: In function 'bgetc': main.c:29:5: warning: ignoring return value of 'fread', declared with attribute warn_unused_result [-Wunused-result] fread(rbuf, sizeof(char), BUFSIZE, fin); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~