UVA11656 Message in the Enemy Territory

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=78&page=show_problem&problem=2703 [PDF](https://uva.onlinejudge.org/external/116/p11656.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11656/56056b4d8ff8afc3edac0f7e530f42fded036917.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11656/dc9ba5a47e3fbe0df28be04affee0d9994e643be.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11656/5a212972e29f1d2520a8f8972b400709a35010b7.png)