#include <algorithm>
#include <list>
#include <iostream>
#include <utility>
#include <vector>
#include <iomanip>
using namespace std;

int main()
{
    int n;
    cin >> n;
    vector<pair<double, double> > ans = {
            {0.0, 0.0},
            {0.0, 0.0},
            {0.0, 0.0},
            {0.0, 0.0},
            {0.0, 0.0},
            {0.0, 0.0},
            {0.0005574136008918618, 0.00179168657429527},
            {0.0018115942028985507, 0.01254180602006689},
            {0.0032431336779162865, 0.049588093066353936},
            {0.004700372091676439, 0.14753724536333232},
            {0.007259026252161263, 0.37179639582385576},
            {0.012467903314585237, 0.834454447154676},
            {0.023421824283313044, 1.695221725373832},
            {0.048777394252895664, 3.1100681691440877},
            {0.10087756689250833, 4.906509400098712},
            {0.18611786819991155, 6.241394727227275},
            {0.29880869792028764, 7.318774015503051},
            {0.4261671458467797, 8.239836631713063},
            {0.5547118785105055, 9.054110649076325},
            {0.6734591495461061, 9.789232506623812},
            {0.7751379055726881, 10.465476552433074},
            {0.856199959460829, 11.098548190939495},
            {0.9162685140946011, 11.700071667462971},
            {0.9572649572649573, 12.27838827838828},
            {0.9824175824175824, 12.83956043956044},
            {0.9954212454212454, 13.388278388278389},
            {1.0, 13.928571428571429},
            {1.0, 14.464285714285714},
            {1.0, 15.0}
    };
    for (int i = 0; i < 29; ++i)
        cout << fixed << setprecision(12) << ans[i].first << ' ' << ans[i].second << '\n';
}