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

int main()
{
    double N = 86000000, sum = 0.0;
    clock_t t1, t2;
    double time, total = 0.0;
	int n = 1;
    t1 = clock();
	#pragma omp parallel for private(n,sum) reduction(+:total)
    for(n = 1; n <= N; n++)
    {
        sum = pow(-1, n) / (pow((2 * n + 1), 3) - 1);
        total += sum;
    }
    t2 = clock();
    time = (t2 - t1) / (double)CLOCKS_PER_SEC;
    cout << time << endl <<total;

}