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 (GNU Fortran 9.2.1) (judge verdict: Wrong Answer)

program prob53
    implicit none
    character :: c
    write(*,'(a)') char(ichar(c) + 1)

    stop
contains
end program prob53