Submission #111631

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Source Code Expand

using System;

class AtCoder
{
    static void Main()
    {
        string[] str = Console.ReadLine().Split(' ');
        double a = Math.Sqrt(Math.Pow(double.Parse(str[0]) - double.Parse(str[2]), 2) + Math.Pow(double.Parse(str[1]) - double.Parse(str[3]), 2));
        double b = Math.Sqrt(Math.Pow(double.Parse(str[0]) - double.Parse(str[4]), 2) + Math.Pow(double.Parse(str[1]) - double.Parse(str[5]), 2));
        double c = Math.Sqrt(Math.Pow(double.Parse(str[2]) - double.Parse(str[4]), 2) + Math.Pow(double.Parse(str[3]) - double.Parse(str[5]), 2));
        double s = (a + b + c) / 2;
        double t = Math.Sqrt(((s - a) * (s - b) * (s - c)) * s);
        Console.WriteLine(t);
        return;
    }
}

Submission Info

Judge Result