A Reverse

题目描述

You are given integers $L$, $R$, and a string $S$ consisting of lowercase English letters.
Print this string after reversing (the order of) the $L$-th through $R$-th characters.

输入格式

Input is given from Standard Input in the following format: $L$ $R$ $S$

输出格式

Print the specified string.

3 7
abcdefgh

abgfedch

1 7
reviver

reviver

4 13
merrychristmas

meramtsirhcyrs

提示

$S$ consists of lowercase English letters. $1 \le |S| \le 10^5$ ($|S|$ is the length of $S$.) $L$ and $R$ are integers. $1 \le L \le R \le |S|$After reversing the $3$-rd through $7$-th characters of $abcdefgh$, we have $abgfedch$.
The operation may result in the same string as the original.

标签: AtCoder|abc233B

来源

AtCoder|abc233B