Submission #462995

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Source Code Expand

import java.util.Scanner;

public class Main{
	public static void main(String[] args){
		Solve slv = new Solve();
		slv.solve();
	}
}

class Solve{
	Scanner in = new Scanner(System.in);
	void solve(){
		Point[] p = new Point[3];
		for(int i=0; i<3; i++){
			p[i] = new Point(in.nextInt(), in.nextInt());
		}
		System.out.println(Math.abs(triarea(p[0], p[1], p[2])/2.0));
	}
	
	static int triarea(Point a, Point b, Point c){
		int dx1 = b.x - a.x;
		int dy1 = b.y - a.y;
		int dx2 = c.x - a.x;
		int dy2 = c.y - a.y;
		return dx1*dy2 - dx2*dy1;
	}
	
	class Point{
		int x, y;
		Point(int x, int y){
			this.x = x;
			this.y = y;
		}
	}
}

Submission Info

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