#include <iostream>
#include <time.h>
#include <stdlib.h>
using namespace std;

#define pi 3.14159265359

double AproxPi(unsigned n){
    double piAprox = 0, r;

    srand((time(NULL)));
    while(n){
        r = ((double) rand() / (RAND_MAX));
        if(piAprox + r <= pi)
            piAprox += r;
        n--;
    }
return piAprox;
}


int main ()
{
    unsigned n;
    cout <<"Numarul de numere generate: "; cin >> n;
    cout <<"Rezultatul aproximari lui pi cu cele " << n << " generate este "<<AproxPi(n);

return 0;
}