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)

#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include<math.h>
#define ll long long
#define pai 3.1415926535897932384626433832795028841971693
long long min(long long a, long long b){
    if(a < b) return a;
    else return b;
}
long long max(long long a, long long b){
    if(a < b) return b;
    else return a;
}
int main(){
 char s[0];
scanf("%c",s);
  if((s[0]>= 'a') && (s[0]<='z')){
  printf("a");
    return 0;
  }
  else{
    printf("A");
    return 0;
  }
}