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#18181. 最喜欢的短语

統計

按照传统,我们正在收集你最喜欢的短语!

然而,这一次有一些规则。Christian 特别喜欢恰好包含 $n$ 个不含空格的子串(即不包含空格字符的连续子串)的短语。例如,短语 “Hey yo” 有 9 个不含空格的子串:Hey、He、ey、H、e、y,以及 yo、y 和 o。

如果一个不含空格的子串多次出现,则每次出现都会被计算。换句话说,我们计算的是不含空格的子串的总数,而不是不重复的不含空格的子串数量。

给定一个正整数 $n$,输出一个恰好包含 $n$ 个不含空格的子串的短语。

输入格式

输入包含一个单个整数 $n$ ($1 \le n \le 100$) —— 你的短语中不含空格的子串数量。

输出格式

在一行中输出一个恰好包含 $n$ 个不含空格的子串的短语。你可以使用英文大小写字母和空格。你的短语最多可以包含 10 个单词。你短语中的单词不需要是真实的英文单词。

样例

输入样例 1

9

输出样例 1

Hey yo

输入样例 2

21

输出样例 2

Proof by AC

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