import java.util.*;
import java.lang.*;
import java.io.*;

class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		String stringToSwitch = "A";
		    switch (stringToSwitch) {
		    	case "a":
		    		System.out.println("a");
		    		break;
		        case "A":
		            System.out.println("A"); //the code goes here
		            break;
		        case "B":
		            System.out.println("B");
		            break;
		        default:
		            break;
		    }
	}
}