_09_PointsInsideHouse

package Homework2;
import java.util.*;

public class PointsInsideHouse {

    static double area(double x1, double y1, double x2, double y2, double x3, double y3) {
        return Math.abs((x1*(y2-y3) + x2*(y3-y1)+ x3*(y1-y2))/2.0);
    }

    static boolean isInside(double x1, double y1, double x2, double y2, double x3, double y3, double x, double y) {
        double A = area(x1, y1, x2, y2, x3, y3);
        double A1 = area(x, y, x2, y2, x3, y3);
        double A2 = area(x1, y1, x, y, x3, y3);
        double A3 = area(x1, y1, x2, y2, x, y);
        return (A == A1 + A2 + A3);
    }

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        double x = sc.nextDouble();
        double y = sc.nextDouble();
        double x1 = 12.5, y1 = 8.5;
        double x2 = 22.5, y2 = 8.5;
        double x3 = 17.5, y3 = 3.5;

        if (isInside(x1, y1, x2, y2, x3, y3, x, y)
                || ((x >= 12.5) & (x <= 17.5) & (y >= 8.5) & (y <= 13.5))
                || ((x >= 20) & (x <= 22.5) & (y >= 8.5) & (y <= 13.5)) ) {
            System.out.println("Inside");
        }
        else {
            System.out.println("Outside");
        }

    }

}