小劉给出了一个定义”签到数“,当且仅当该数字满足下列的两个条件
1.数位恰好为2
2.个位数和十位数相同
请你判断一个给定的正整数是否为”签到数“
2
33
144
YES
NO
Anything about this OnlineJudge, Please Contact Administrator. Click add QQ
OJ system based on HUSTOJ Project , UI based on Twitter Bootstrap
Copyright 2016 ACM算法攻关部