using System;
namespace ConsoleApplication6
{
internal class Program
{
private static void Main()
{
int iters = 100;
double a = 0;
for (int q = 0; q < iters; q++)
for (int i = 0; i < 1000000; i++)
if (i%2 == 0) a += Math.Sin(i); else a -= Math.Sin(i);
Console.WriteLine(a);
}
}
}
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