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 next_alphabet
    implicit none
    character(1):: c
    character(26), parameter:: alphabet = "abcdefghijklmnopqrstuvwxyz"
    integer:: i

    read*, c
    do i=1, 26
        if (alphabet(i:i) == c)then
            print*, alphabet(i+1:i+1)
            stop
        end if
    end do
end program next_alphabet