import java.util.Scanner;

public class VaccineTest

{

	public static void main (String[] args) {

		while(true){
			Scanner scan = new Scanner(System.in);
			int age;
			char inFlu;
			char pregnant;


		System.out.print("\n\tEnter your age: ");
		age = scan.nextInt();

		System.out.print("\n\tDo you belong to a seasonal flu at-risk group? (y/n): ");
		inFlu = scan.next().charAt(0);

		System.out.print("\n\tAre you pregnant? (y/n): ");
		pregnant = scan.next().charAt(0);

		if ((pregnant == 'y' || pregnant == 'n') && (inFlu == 'y' || inFlu == 'n')){


			if (age<65 && inFlu == 'y')
				System.out.println ("Please visit your doctor between October 26th and November 6th. ");

			else if (pregnant == 'y')
				System.out.println ("Please visit your doctor between November 9th and November 20th. ");

			else
				System.out.println ("You do not need to be vaccinated. ");

		}
		else
			System.out.println ("Input Error. Please start again. ");
		}
	}

}