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<bits/stdc++.h>

using namespace std;

#define FastIO ios_base :: sync_with_stdio(false), cin.tie(0), cout.tie(0)
#define read(in) freopen("Input.txt","r",stdin)
#define write(out) freopen("Ouput.txt","w",stdout)
#define pf printf
#define sf scanf
#define fr(i,n) for(i=1 ; i<=n ; i++)
#define fr1(i,x,n) for(i=x ; i<=n ; i++)
#define sf1(val) scanf("%lld",&val)
#define sf2(val1,val2) scanf("%lld %lld",&val1,&val2)
#define INF 999999999999999999
#define Pi 2*acos(0.0)
#define len 200000

typedef long long int lli;

lli a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,sum=0,total=0,res=0,ans=0;

int main()
{
    //FastIO;

    //read(in);
  
  	char ch;	sf("%c",&ch);
  
  	if(ch>='A' && ch<='Z') pf("A\n");
  	else pf("a\n");
}