using System;

namespace Euler_Problem_0000006

{

internal class Program

{

private static void Main()

{

double sumOfSquares = SumSquares(1, 100);

double squareOfSums = SquareSums(1, 100);

double diff = squareOfSums - sumOfSquares;

Console.WriteLine(diff);

Console.ReadKey();

}

private static double SquareSums(int min, int max)

{

double sum = 0;

for (int i = min; i <= max; i++)

{

sum += i;

}

return Math.Pow(sum, 2);

}

private static double SumSquares(int min, int max)

{

double sum = 0;

for (int i = min; i <= max; i++)

{

sum = sum + Math.Pow(i, 2);

}

return sum;

}

}

}