import java.util.Scanner;

public class Exercise29{

public static void main(String []args){

Scanner scanner = new Scanner(System.in);

System.out.println("Input right front pressure");

int rightFront = scanner.nextInt();

System.out.println("Input left front pressure");

int lefttFront = scanner.nextInt();

System.out.println("Input right rear pressure");

int rightRear = scanner.nextInt();

System.out.println("Input left rear pressure");

int leftRear = scanner.nextInt();

if ( rightFront == lefttFront && rightRear == leftRear){

System.out.println("Inflation is OK");

} else {

System.out.println("Inflation is NOT OK");

}

}

}