Score : $100$ points

问题描述

你将得到一个由小写英文字母组成的字符串 $S$。

交换 $S$ 开头的第 $a$ 个和第 $b$ 个字符，并输出变换后的字符串。

以上为通义千问 qwen-max 翻译，仅供参考。

Problem Statement

You are given a string $S$ consisting of lowercase English letters.

Swap the $a$-th and $b$-th characters from the beginning of $S$ and print the resulting string.

Constraints

• $S$ is a string consisting of lowercase English letters.
• The length of $S$, $|S|$, satisfies $2 \leq |S| \leq 10$.
• $1 \leq a < b \leq |S|$
• $a$ and $b$ are integers.

Input

Input is given from Standard Input in the following format:

$S$

$a$ $b$

Output

Print the answer.

Sample Input 1

chokudai
3 5

Sample Output 1

chukodai

After swapping the $3$-rd character o and $5$-th character u of chokudai, we have chukodai.

Sample Input 2

aa
1 2

Sample Output 2

aa

In this sample, after swapping the $1$-st and $2$-nd characters of $S$, we have the same string as $S$.

Sample Input 3

aaaabbbb
1 8

Sample Output 3

baaabbba

update @ 2024/3/10 10:13:07