Problem:
Score : 100 points

Problem Statement

An uppercase or lowercase English letter \alpha will be given as input.
If \alpha is uppercase, print A; if it is lowercase, print a.

Constraints

\alpha is an uppercase (A - Z) or lowercase (a - z) English letter.

Input

Input is given from Standard Input in the following format:

α

Output

If \alpha is uppercase, print A; if it is lowercase, print a.

Sample Input 1

B

Sample Output 1

A

B is uppercase, so we should print A.

Sample Input 2

a

Sample Output 2

a

a is lowercase, so we should print a.

Solution in Fortran (GNU Fortran 9.2.1) (judge verdict: Runtime Error)

program sample
    implicit none
  
    integer(8) :: i,j,m,n,k,l,q,t(100000)
    
    integer(8),allocatable :: a(:),b(:),c(:)
  
    read(*,*) n
    allocate(a(n))
    read(*,*)a
    read(*,*)q
    allocate(b(q))
    allocate(c(q))
    do i=1,q
        read(*,*)b(i),c(i)
    end do
    do i=1,10000
        t(i)=0
    end do
    do i=1,n
        m=a(i)
        t(m)=t(m)+1
    end do
    m=sum(a)


    do i=1,q
        k=b(i)
        l=c(i)
        m=m+(l-k)*t(k)
        t(l)=t(l)+t(k)
        t(k)=0
        
        write(*,*)m
    end do
    
    
    stop
end program sample