__int64 sub_770()
{
  char *v0; // rbx@1
  signed __int64 v1; // rax@1

  v0 = (char *)calloc(1uLL, 0x51uLL);
  puts("enter code:");
  fflush(stdout);
  fgets(v0, 80, stdin);
  v1 = sub_C6C(v0);
  printf("sum is %ld\n", v1);
  return 0LL;
}