/* WARNING: Globals starting with '_' overlap smaller symbols at the same address */

undefined8 FUN_00100680(void)

{
  long lVar1;
  int prev_char;
  int value;
  long counter;
  long in_FS_OFFSET;
  char input [136];
  char *curr_position;
  long offset;

  lVar1 = *(long *)(in_FS_OFFSET + 0x28);
  __printf_chk(1,"Flag: ");
  __isoc99_scanf();
                    /* if first char is 'H' */
  if ((int)input[0] == _h) {
    if (999 < DAT_00301024) {
LAB_00100718:
      puts("Congratz! :D");
      goto LAB_0010073c;
    }
                    /* second char of input is used as comparison */
    prev_char = (int)input[1];
    if (DAT_00301024 == prev_char - (int)input[0]) {
      counter = 2;
      do {
                    /* 0, 8, 12, 16, ...
                       Only used as terminating condition */
        offset = counter * 4;
        if (999 < *(int *)(&h + offset)) goto LAB_00100718;
        curr_position = input + counter;
                    /* (init: 2), 3, 4, ... */
        counter = counter + 1;
                    /* (input[0+2] - input[1]), (input[0+3]-input[2]), (input[0+4]-input[3]), ...

                        */
        value = (int)*curr_position - prev_char;
        prev_char = (int)*curr_position;
      } while (value == *(int *)(&h + offset));
    }
  }
  puts("Wrong flag.... :(");
LAB_0010073c:
  if (lVar1 == *(long *)(in_FS_OFFSET + 0x28)) {
    return 0;
  }
                    /* WARNING: Subroutine does not return */
  __stack_chk_fail();
}