题目描述
Given is a lowercase English letter C that is not z. Print the letter that follows C in alphabetical order.
Constraints
- C is a lowercase English letter that is not
z.
Input
Input is given from Standard Input in the following format:
C
Output
Print the letter that follows C in alphabetical order.
Examples
Input
a
Output
b
Input
y
Output
z
输入格式
见题面
输出格式
见题面
样例输入
y
样例输出
z