Submission #1790209

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Source Code Expand

import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int[] x = new int[3];
		int[] y = new int[3];
		for(int i = 0 ; i < 3 ; i++) {
			x[i] = sc.nextInt();
			y[i] = sc.nextInt();
		}
		x[1] -= x[0];
		y[1] -= y[0];
		x[2] -= x[0];
		y[2] -= y[0];
		x[0] = 0;
		y[0] = 0;
		double ans = Math.abs(x[1] * y[2] - x[2] * y[1]) / 2.0;
		System.out.printf("%.10f\n", ans);
	}
}

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