Last Digit

题目描述

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=13&page=show_problem&problem=1103 [PDF](https://uva.onlinejudge.org/external/101/p10162.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10162/82c8405012c07c82909f02b95c03e562b7ead7f8.png)

输入输出格式

输入格式


![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10162/836988e149ce8f1fa0bfb516020c97fa0cdba1a0.png)

输出格式


![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10162/61e776a0078e3cf7e73dffc44d806c098820ff4e.png)

输入输出样例

输入样例 #1

1
2
3
0

输出样例 #1

1
5
2