import java.util.Scanner;

public class CompoundConditional {
	public static void main(String[] args) {
		int num, months, miles;
		Scanner sc = new Scanner(System.in);

		final int LOWER_LIMIT = 35;
		final int UPPER_LIMIT = 70;

		System.out.print(
				"Enter a number between " +
				LOWER_LIMIT + " and " +
				UPPER_LIMIT + ": ");
		num = sc.nextInt();
		if ((num > LOWER_LIMIT) && (num < UPPER_LIMIT)) {
			System.out.println("Thank you.");
		}
		else {
			System.out.println(
					"That's not between " +
					LOWER_LIMIT + " and " +
					UPPER_LIMIT + ".");
		}

		/* Even though these constant values are only used once each
		 * in this program, we still make them named constants for
		 * good style and future flexibility and readability.
		 */
		final int MONTH_BOUNDARY = 3; 
		final int MILES_BOUNDARY = 3000;
		System.out.print("How many months since your last oil change? ");
		months = sc.nextInt();
		System.out.print("How many miles since your last oil change? ");
		miles = sc.nextInt();
		if ((months >= MONTH_BOUNDARY) || (miles > MILES_BOUNDARY)) {
			System.out.println("Get an oil change!");
		}
		else {
			System.out.println("Keep on driving...");
		}
	}
}

//Copyright 2010-2012 : Evan Golub