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 C (GCC 9.2.1) (judge verdict: Runtime Error)

#include<stdio.h>
void main()
{
  int k=3,n=4,total=0,i,j,a;
  int price[1000];
  for(i=0;i<n;i++)
  {
    for(j=i+1;j<n;j++)
    {
      if(price[i]>price[j])
      {
        a=price[i];
        price[i]=price[j];
        price[j]=a;
      }
    }
  }
  for(i=0;i<k;i++)
  {
    total=total+price[i];
  }
}