回文数

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说明

1221是一个非常特殊的数,它从左边读和从右边读是一样的,编程求所有这样的四位十进制数。

输入格式

按从小到大的顺序输出满足条件的四位十进制数。

输出格式

样例

第七届SWPU-ACM新生预选赛

Not Attended
Status
Done
Rule
ACM/ICPC
Problem
103
Start at
2022-9-19 14:00
End at
2022-10-28 14:00
Duration
936 hour(s)
Host
Partic.
58