题目描述

PDF

输入格式

AS shown in the PDF.

输出格式

AS shown in the PDF.

样例

ICPC 

17 

A 

1 

The quick brown dog jumps over the lazy fox. 

335 

提示

sourced from 2019 ACM Southeast USA regional（10小时马拉松赛）

by QLU_杨光耀