Snuke - Problème

#15798. Snuke

Statistiques

AI Translation — This statement was translated using AI and may contain inaccuracies. Please refer to the original statement if in doubt.

Snuke 喜欢从字符串中删除字符 's'。Snuke 收到了一个字符串 $t$ 作为他的生日礼物。

计算通过从字符串 $t$ 中恰好删除 $k$ 个 's' 所能得到的字典序最小的字符串。

输入格式

输入的第一行包含一个整数 $k$，第二行包含一个字符串 $t$。

数据范围

$1 \le k < |t| \le 10^5$
$t$ 中的每个字符都是小写字母
$t$ 中 's' 的数量至少为 $k$

输出格式

在单行中输出答案。

样例

输入样例 1

1
snuke

输出样例 1

nuke

输入样例 2

4
srstsrstsrst

输出样例 2

rstrstrt

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