Problem:
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.

Solution in Fortran (gfortran v4.8.4) (judge verdict: Accepted)

program main

  implicit none
  
  character(1) :: x 

  read(*,*) x

  print*, achar( ichar(x)+1 )


end program main