import java.util.Scanner;

public class Main {
    public static void main(String[] args)
    {
        Scanner scanner = new Scanner(System.in);
        String uppercase = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
        String lowercase = "abcdefghijklmnopqrstuvwxyz";

        String alpha = scanner.nextLine();

        if(uppercase.contains(alpha))
            System.out.println("A");
        else
            System.out.println("a");
    }
} import java.util.Scanner; Scanner java.util public class Main {
    public static void main(String[] args)
    {
        Scanner scanner = new Scanner(System.in);
        String uppercase = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
        String lowercase = "abcdefghijklmnopqrstuvwxyz";

        String alpha = scanner.nextLine();

        if(uppercase.contains(alpha))
            System.out.println("A");
        else
            System.out.println("a");
    }
} Main public static void main(String[] args)
    {
        Scanner scanner = new Scanner(System.in);
        String uppercase = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
        String lowercase = "abcdefghijklmnopqrstuvwxyz";

        String alpha = scanner.nextLine();

        if(uppercase.contains(alpha))
            System.out.println("A");
        else
            System.out.println("a");
    } main {
        Scanner scanner = new Scanner(System.in);
        String uppercase = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
        String lowercase = "abcdefghijklmnopqrstuvwxyz";

        String alpha = scanner.nextLine();

        if(uppercase.contains(alpha))
            System.out.println("A");
        else
            System.out.println("a");
    } Scanner scanner = new Scanner(System.in); scanner new Scanner(System.in) String uppercase = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"; uppercase "ABCDEFGHIJKLMNOPQRSTUVWXYZ" String lowercase = "abcdefghijklmnopqrstuvwxyz"; lowercase "abcdefghijklmnopqrstuvwxyz" String alpha = scanner.nextLine(); alpha scanner.nextLine() scanner.nextLine scanner if(uppercase.contains(alpha))
            System.out.println("A");
        else
            System.out.println("a"); uppercase.contains(alpha) uppercase.contains uppercase alpha System.out.println("A") System.out.println System.out System System.out "A" System.out.println("a") System.out.println System.out System System.out "a" String[] args args public class Main {
    public static void main(String[] args)
    {
        Scanner scanner = new Scanner(System.in);
        String uppercase = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
        String lowercase = "abcdefghijklmnopqrstuvwxyz";

        String alpha = scanner.nextLine();

        if(uppercase.contains(alpha))
            System.out.println("A");
        else
            System.out.println("a");
    }
} public class Main {
    public static void main(String[] args)
    {
        Scanner scanner = new Scanner(System.in);
        String uppercase = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
        String lowercase = "abcdefghijklmnopqrstuvwxyz";

        String alpha = scanner.nextLine();

        if(uppercase.contains(alpha))
            System.out.println("A");
        else
            System.out.println("a");
    }
} Main
import java.util.Scanner;

public class Main {
    public static void main(String[] args)
    {
        Scanner scanner = new Scanner(System.in);
        String uppercase = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
        String lowercase = "abcdefghijklmnopqrstuvwxyz";

        String alpha = scanner.nextLine();

        if(uppercase.contains(alpha))
            System.out.println("A");
        else
            System.out.println("a");
    }
}
