/* package whatever; // don't place package name! */

import java.util.*;
import java.lang.*;
import java.io.*;

/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
	   System.out.println(booleanExpression(true, true, true, true));
	   System.out.println(booleanExpression(true, true, true, false));
	   System.out.println(booleanExpression(false, false, false, true));
	   System.out.println(booleanExpression(false, false, false, false));
	   System.out.println(booleanExpression(true, false, true, false));
	}
	
	public static boolean booleanExpression(boolean a, boolean b, boolean c, boolean d) 
	{
     if (a && b) return !(c || d);
     if (c && d) return !(a || b);
     return (a || b) && (c || d);
    }
}

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