Score : $200$ points

问题描述

你得到一个字符串 $S$，其中包含字符 0、1、6、8 和 9。

将字符串 $S$ 旋转 $180$ 度，并打印旋转后的结果。换句话说，对 $S$ 应用以下操作并输出得到的新字符串：

• 反转字符串 $S$。
• 将每个 0 替换为 0，每个 1 替换为 1，每个 6 替换为 9，每个 8 替换为 8，每个 9 替换为 6。

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 0, 1, 6, 8, and 9.

Rotate $S$ $180$ degrees and print the result. In other words, apply the following operations on $S$ and print the resulting string:

• Reverse $S$.
• Replace each 0 with a 0, each 1 with a 1, each 6 with a 9, each 8 with an 8, and each 9 with a 6.

Constraints

• $1 \leq |S| \leq 10^5$
• $S$ consists of 0, 1, 6, 8, and 9.

Input

Input is given from Standard Input in the following format:

$S$

Output

Print the result of rotating $S$ $180$ degrees.

Sample Input 1

0601889

Sample Output 1

6881090

Rotating 0601889 $180$ degrees results in 6881090.

Sample Input 2

86910

Sample Output 2

01698

Sample Input 3

01010

Sample Output 3

01010

$S$ may remain the same.

update @ 2024/3/10 09:14:16