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: Accepted)

//A - αlphabet
//Hiia
#include <stdio.h>
#include <stdlib.h>//rannsuu, zettaichi(absolute)
#include <time.h>
//srand((unsigned int) time(0));
#include <math.h>//koudona keisann
#include <string.h>//hairetsu
//#define max(p,q)((p)>(q)?(p):(q))//yoku wakarannkedo bennrisou
//#define min(p,q)((p)<(q)?(p):(q))//ue ni onaji
//#define N

int main()
{
  char x;
  scanf("%c", &x);
  if('a'<=x && x<= 'z') {
    printf("a");
  }
  else{
    printf("A");
  }


  return 0;
}