【Project Euler】9 第九题

A Pythagorean triplet is a set of three natural numbers, a < b < c, for which,

a2 + b2 = c2

For example, 32 + 42 = 9 + 16 = 25 = 52.

There exists exactly one Pythagorean triplet for which a + b + c = 1000.
Find the product abc.

static void Main(string[] args)
        {
            for (int i = 1; i < 1000; i++)
            {
                for (int j = 1; j < 1000; j++)
                {
                    for (int k = 1; k < 1000; k++)
                    {
                        if (i + j + k == 1000)
                        {
                            if (j * j + k * k == i * i)
                            {
                                int x = i * j * k;
                                Console.WriteLine(x);
                            }
                        }
                    }
                }
            }
        }