2188 问题 E: Casear cypher

 时间限制: 1s 内存限制: 128MB

题目描述

The casear cypher is an encryption method based on changing the letters in some text by a certain amount. For example if we shift each letter by 2, then all a's would be come c's all b's would become d's, all y's will become a's and all z's will become b's etc.
Write a program that reads some text that has been encoded using the Caesar cypher. This text will have been encoded using some shift between 1 and 25. Print the original text to the screen.

输入格式

a single line of characters with length L (0<L<=2^10)

输出格式

a single line of characters have been translated.

样例输入

Mjwj nx f wjfqqd xnruqj rjxxflj ymfy dtz xmtzqi ijhtij

样例输出

Here is a really simple message that you should decode

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