Submission #1315553

---

Source Code Expand

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class Main {
    public static void main(String[] args) {
        try {
            // 標準入力
            InputStreamReader isr = new InputStreamReader(System.in);
            BufferedReader br = new BufferedReader(isr);
            String strArr[] = br.readLine().split(" ");
            double xa = Double.parseDouble(strArr[0]);
            double ya = Double.parseDouble(strArr[1]);
            double xb = Double.parseDouble(strArr[2]);
            xb = xb - xa;
            double yb = Double.parseDouble(strArr[3]);
            yb = yb - ya;
            double xc = Double.parseDouble(strArr[4]);
            xc = xc - xa;
            double yc = Double.parseDouble(strArr[5]);
            yc = yc - ya;
            System.out.println(Math.abs(xb * yc - yb * xc) / 2);
       } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

Submission Info

Judge Result