import java.util.Scanner;

public class app1 {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int age = scanner.nextInt();
        String gender = scanner.next();

        if(age > 16){
            if(gender.equals("m")){
                System.out.println("Mr.");
            }else if(gender.equals("f")){
                System.out.println("Ms.");
            }

        }
        if(age < 17){
            if(gender.equals("m"))
                System.out.println("Master");
        }else if(gender.equals("f")){
            System.out.println("Miss");
        }

    }
}