import java.util.Scanner;

class calculator{
	public static void main(String args[])
	{
		Scanner variation = new Scanner(System.in);
		int input1, input2, fcoordX, fcoordY, scoordX, scoordY, tcoordX, tcoordY, lcoordY, lcoordX, answer1, answer2, answer3, answer4, answer5, answer6, answer7, answer8, answer9, answer10, answer11, answer12;
		/*
		 * input1: tell how many coordinates there is
		 * input2: tell if they want to be inverse or direct
		 *
		 * fcoordX: first coordinate X
		 * fcoordY: First coordinate Y
		 *
		 * scoordX: Second coord X
		 * scoordY: Second coord Y
		 *
		 * tcoordX: Third coord X
		 * tcoordY: Third coord Y
		 *
		 * answer1: Answer to first
		 * answer2: Answer to second
		 */
		System.out.println("Enter 2 for 2 coordinates, 3 for 3 coords, 4 for 4 coords.");
		input1 = variation.nextInt();
		switch (input1)
		{
		case 2:
			System.out.println("Enter 1 for direct, 2 for inverse");
			input2 = variation.nextInt();
			if(input2 == 1)
			{
				//FIRST COORDINATES
				System.out.println("Enter your first X coordinate.");
				fcoordX = variation.nextInt();
				System.out.println("Enter your first Y coordinate.");
				fcoordY = variation.nextInt();
				//SECOND COORDINATES
				System.out.println("Enter your second X coordinate.");
				scoordX = variation.nextInt();
				System.out.println("Enter your first Y coordinate.");
				scoordY = variation.nextInt();
				//ANSWERS
				answer1 = fcoordX * scoordY;
				answer2 = scoordX * fcoordY;
				//ANSWER TO X1 AND Y2
				System.out.print("The answer to X1 * Y2 = ");
				System.out.println(answer1);


				//ANSWER TO X2 AND Y1
				System.out.print("The answer to X2 * Y1 = ");
				System.out.println(answer2);

				if(answer1 == answer2)
				{
					System.out.println("The coordinates are directly constant.");
				}else
				{
					System.out.println("The coordinates are NOT Directly constant.");
				}



			}else
			{
				//FIRST COORDINATES
				System.out.println("Enter your first X coordinate.");
				fcoordX = variation.nextInt();
				System.out.println("Enter your first Y coordinate.");
				fcoordY = variation.nextInt();
				//SECOND COORDINATES
				System.out.println("Enter your second X coordinate.");
				scoordX = variation.nextInt();
				System.out.println("Enter your second Y coordinate.");
				scoordY = variation.nextInt();
				//ANSWERS
				answer1 = fcoordX * fcoordY;
				answer2 = scoordX * scoordY;
				//ANSWER TO X1 AND Y2
				System.out.print("The answer to X1 * Y1 = ");
				System.out.println(answer1);


				//ANSWER TO X2 AND Y1
				System.out.print("The answer to X2 * Y2 = ");
				System.out.println(answer2);

				if(answer1 == answer2)
				{
					System.out.println("The coordinates are inversly constant.");
				}else
				{
					System.out.println("The coordinates are not indirectly constant.");
				}



			}


			break;





		case 3:

			System.out.println("Enter 1 for direct, 2 for indirect.");
			input2 = variation.nextInt();
			if(input2 == 1)
			{
				//DIRECTLY
				System.out.println("Enter your first X coordinate.");
				fcoordX = variation.nextInt();
				System.out.println("Enter your first Y coordinate.");
				fcoordY = variation.nextInt();
				//SECOND COORDINATES
				System.out.println("Enter your second X coordinate.");
				scoordX = variation.nextInt();
				System.out.println("Enter your second Y coordinate.");
				scoordY = variation.nextInt();
				//THIRD COORDINATES
				System.out.println("Enter your third X coordinate.");
				tcoordX = variation.nextInt();
				System.out.println("Enter your third Y coordinate.");
				tcoordY = variation.nextInt();

				answer1 = fcoordX * scoordY;
				answer2 = scoordX * fcoordY;
				answer3 = fcoordX * tcoordY;
				answer4 = tcoordX * fcoordY;
				answer5 = fcoordX * tcoordY;
				answer6 = tcoordX * fcoordY;
				/*
				 * answer1= 1st coord X * 2nd coord Y
				 * answer2= 2nd coord X * 1st coord Y
				 * answer3= 1st coord X * 3rd coord Y
				 * answer4= 3rd coord X *
				 *
				 */

				System.out.println("Answer to X1 and Y2 =");
				System.out.println(answer1);

				System.out.println("Answer to X2 and Y1 =");
				System.out.println(answer2);

				System.out.println("Answer to X1 and Y3 = ");
				System.out.println(answer3);

				System.out.println("Answer to X3 and Y1 =");
				System.out.println(answer4);

				System.out.println("Answer to X3 and Y2");
				System.out.println(answer5);

				System.out.println("Answer to X2 and Y3");
				System.out.println(answer6);



			}else
			{


				//DIRECTLY
				System.out.println("Enter your first X coordinate.");
				fcoordX = variation.nextInt();
				System.out.println("Enter your first Y coordinate.");
				fcoordY = variation.nextInt();
				//SECOND COORDINATES
				System.out.println("Enter your second X coordinate.");
				scoordX = variation.nextInt();
				System.out.println("Enter your second Y coordinate.");
				scoordY = variation.nextInt();
				//THIRD COORDINATES
				System.out.println("Enter your third X coordinate.");
				tcoordX = variation.nextInt();
				System.out.println("Enter your third Y coordinate.");
				tcoordY = variation.nextInt();

				answer1 = fcoordX * fcoordY;
				answer2 = scoordX * scoordY;
				answer3 = tcoordX * tcoordY;
				/*
				 * answer1= 1st coord X * 2nd coord Y
				 * answer2= 2nd coord X * 1st coord Y
				 * answer3= 1st coord X * 3rd coord Y
				 * answer4= 3rd coord X *
				 *
				 */

				System.out.println("Answer to X1 and Y2 =");
				System.out.println(answer1);

				System.out.println("Answer to X2 and Y1 =");
				System.out.println(answer2);

				System.out.println("Answer to X1 and Y3 = ");
				System.out.println(answer3);



			}

			break;

		case 4:



			System.out.println("Enter 1 for direct, 2 for indirect.");
			input2 = variation.nextInt();
			if(input2 == 1)
			{
				//INDIRECTLY
				System.out.println("Enter your first X coordinate.");
				fcoordX = variation.nextInt();
				System.out.println("Enter your first Y coordinate.");
				fcoordY = variation.nextInt();
				//SECOND COORDINATES
				System.out.println("Enter your second X coordinate.");
				scoordX = variation.nextInt();
				System.out.println("Enter your second Y coordinate.");
				scoordY = variation.nextInt();
				//THIRD COORDINATES
				System.out.println("Enter your third X coordinate.");
				tcoordX = variation.nextInt();
				System.out.println("Enter your third Y coordinate.");
				tcoordY = variation.nextInt();
				//FOURTH COORDS
				System.out.println("Enter your fourth X coordinate.");
				lcoordX = variation.nextInt();
				System.out.println("Enter your fourth Y coordinate.");
				lcoordY = variation.nextInt();


				answer1 = fcoordX * scoordY;
				answer2 = scoordX * fcoordY;
				answer3 = fcoordX * tcoordY;
				answer4 = tcoordX * fcoordY;
				answer5 = scoordX * tcoordY;
				answer6 = tcoordX * scoordY;

				answer7 = fcoordX * lcoordY;
				answer8 = lcoordX * fcoordY;
				answer9 = scoordX * lcoordY;
				answer10 = lcoordX * scoordY;
				answer11 = tcoordX * lcoordY;
				answer12 = lcoordX * tcoordY;
				/*
				 * answer1= 1st coord X * 2nd coord Y
				 * answer2= 2nd coord X * 1st coord Y
				 * answer3= 1st coord X * 3rd coord Y
				 * answer4= 3rd coord X *
				 *
				 */

				System.out.print("Answer to X1 and Y2 = ");
				System.out.println(answer1);

				System.out.print("Answer to X2 and Y1 = ");
				System.out.println(answer2);

				System.out.print("Answer to X1 and Y3 = ");
				System.out.println(answer3);

				System.out.print("Answer to X3 and Y1 = ");
				System.out.println(answer4);

				System.out.print("Answer to X3 and Y2 = ");
				System.out.println(answer5);

				System.out.print("Answer to X2 and Y3 = ");
				System.out.println(answer6);
				//BREAK BREAK BREAK BREAK BREAK BREAK BREAK
				System.out.print("Answer to X1 and Y4 = ");
				System.out.println(answer7);

				System.out.print("Answer to X4 and Y1 = ");
				System.out.println(answer8);

				System.out.print("Answer to X2 and Y4 = ");
				System.out.println(answer9);

				System.out.print("Answer to X4 and Y2 = ");
				System.out.println(answer10);

				System.out.print("Answer to X3 and Y4 = ");
				System.out.println(answer11);

				System.out.print("Answer to X4 and Y3 = ");
				System.out.println(answer12);

				System.out.println("To find answer: Every pair(2) has to match. EX. 1, 2 match 3, 4 match.");



				if(answer1 == answer2 && answer3 == answer4 && answer5 == answer6 && answer7 == answer8 && answer9 == answer10 && answer11 == answer12)
				{
					System.out.println("These coordinates ARE ALL directly constant.");
				}else{
					System.out.println("These coordinates are not directly constant.");
					System.out.println("Remember that if one coordinate is not constant, I think it isn't. Try 3 or 2 now!");
				}



			}else
			{
				//DIRECTLY
				System.out.println("Enter your first X coordinate.");
				fcoordX = variation.nextInt();
				System.out.println("Enter your first Y coordinate.");
				fcoordY = variation.nextInt();
				//SECOND COORDINATES
				System.out.println("Enter your second X coordinate.");
				scoordX = variation.nextInt();
				System.out.println("Enter your second Y coordinate.");
				scoordY = variation.nextInt();
				//THIRD COORDINATES
				System.out.println("Enter your third X coordinate.");
				tcoordX = variation.nextInt();
				System.out.println("Enter your third Y coordinate.");
				tcoordY = variation.nextInt();
				//FOURTH COORDS
				System.out.println("Enter your fourth X coordinate.");
				lcoordX = variation.nextInt();
				System.out.println("Enter your fourth Y coordinate.");
				lcoordY = variation.nextInt();


				answer1 = fcoordX * fcoordY;
				answer2 = scoordX * scoordY;
				answer3 = tcoordX * tcoordY;
				answer4 = lcoordX * lcoordY;
				/*
				 * answer1= 1st coord X * 2nd coord Y
				 * answer2= 2nd coord X * 1st coord Y
				 * answer3= 1st coord X * 3rd coord Y
				 * answer4= 3rd coord X *
				 *
				 */

				System.out.print("Answer to X1 and Y2 = ");
				System.out.println(answer1);

				System.out.print("Answer to X2 and Y1 = ");
				System.out.println(answer2);

				System.out.print("Answer to X1 and Y3 = ");
				System.out.println(answer3);

				System.out.print("Answer to X3 and Y1 = ");
				System.out.println(answer4);


				System.out.println("To find answer: Every pair(2) has to match. EX. 1, 2 match 3, 4 match.");



				if(answer1 == answer2 && answer3 == answer4)
				{
					System.out.println("These coordinates ARE ALL inversly constant.");
				}else{
					System.out.println("These coordinates are not inversly constant.");
					System.out.println("Remember that if one coordinate is not constant, I think it isn't. Try 3 or 2 now!");
				}






			}

				break;


		}
	}

}