论文部分内容阅读
请连续记自0开始的正整数。如0123456789101112131415……并倒记:1514131211109876543210,问,距开始和终了
Please remember from 0 consecutive positive integer. Such as 0123456789101112131415 ...... And remember: 1514131211109876543210, asked, from the beginning and the end