// Boolean variables

// Check whether the temperature is between 62 and 80
// and print OK.

import java.util.*;

public class ComplexIf2 {
	public static void main(String[] args) {
		Scanner console = new Scanner(System.in);
		System.out.print("Enter temperature: ");
		int temp = console.nextInt();

		boolean tooLow, tooHigh;

		tooLow = temp < 62;
		tooHigh = temp > 80;

		if (!tooLow && !tooHigh) {
			System.out.println("OK");
		}
		if (tooLow || tooHigh) {
			System.out.println("Not OK");
		}
	}
}