ak pz1 ex p1.2 with alg

#include <cstdio>
#include <chrono>

using namespace  std::chrono;

double Random()
{
   static const unsigned int A = 1686629717;
   static const unsigned int C = 907633385;
   static unsigned int n = time(nullptr);

   return static_cast<double>(n = A * n + C) / 0xFFFFFFFF;
}

double pi(int N)
{
   int M = 0;
   double x = -1, y = -1;
   for (int i = 0; i < N; ++i)
   {
      x = Random();
      y = Random();
      if (x * x + y * y <= 1)
         ++M;
   }

   return M * 4.0 / N;
}

int main()
{
   double N = 0;
   printf_s("count: ");
   scanf_s("%lf", &N);

   auto s = high_resolution_clock::now();
   auto p = pi(N);
   auto t = duration_cast<duration<double, std::ratio<1>>> (high_resolution_clock::now() - s).count();

   printf_s("pi: %lf; time: %lf s\n", p, t);
   return 0;
}