#include  <stdio.h>
#include  <math.h>

int main()
{
    double r[3], v[3], a[3];
    double dt = 0.0001;
    int ns, k;

    r[0] = 1;
    r[1] = 0;
    r[2] = 0;
    v[0] = 0;
    v[1] = 0.5;
    v[2] = 0;

    for (ns = 0; ns < 100000; ns++){
        double r2 = r[0]*r[0] + r[1]*r[1] + r[2]*r[2];
        for (k = 0; k < 3; k++)
            a[k] = - r[k] / (r2 * sqrt(r2));
        for (k = 0; k < 3; k++){
            r[k] += v[k] * dt;
            v[k] += a[k] * dt;
        }
    }
    printf("%.15g %.15g %.15g %.15g %.15g %.15g\n",
           r[0], r[1], r[2], v[0], v[1], v[2]);
}