//Root macro to calculate pi using monte-carlo simulation. Edited version of montecarlo.C with some new attempts. 

{
 
  vector<int> nTotal = {100,1000,10000,100000,1000000};
  
 
  int circle_points = 0;
  int square_points = 0;

 
  TRandom3 rand(0);

  for (Int_t i = 0; i < nTotal.size(); i++){
    for (Int_t j = 0; j < nTotal[i]; j++){

    Double_t x = rand.Rndm();
    Double_t y = rand.Rndm();

   
    Double_t  distance = x*x + y*y;

   
     if (distance <= 1)
     circle_points++;
     square_points++;
   
   
  }
  }
  Double_t pi = double(4*circle_points)/(square_points);  
    cout<<pi<<endl;
   
   
  }