C762 Zhang 751, the Stupidest and Fastest Way!
After a day, Chen Ming looked at the handwriting he left on the ground.
On the first day, he slew three dragons.
Then he wrote:
On the thirteenth day, he slew one hundred and nine dragons.
Time passed and the handwriting on the ground continued to increase.
On the fourteenth day, he slew one hundred and thirty-two dragons.
On the fifteenth day, he slew one hundred and eighty dragons
