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Score : $100$ points

### Problem Statement

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.

### Sample Input 1

a


### Sample Output 1

b


a is followed by b.

### Sample Input 2

y


### Sample Output 2

z


y is followed by z.