import java.util.Scanner;

public class bgb
{
    public static void main(String[] args) {
        Scanner console = new Scanner(System.in);

        double age = Double.parseDouble(console.nextLine());
        String gender = console.nextLine();

        if (gender.equals("m") && age < 16) {
            System.out.print("Master");
        } else if (gender.equals("m") && age >= 16) {
            System.out.print("Mr.");
        } else if (gender.equals("f") && age < 16) {
            System.out.print("Miss");
        } else {
            System.out.print("Ms.");
        }
    }

}