#include <bits/stdc++.h>
using namespace std;

//typedef long long ll;
#define int long long

int n;
signed main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);cout.tie(0);
    cin >> n;
    int a = 0, b = 1;
    int c = 1, d = n;
    cout << a << '/' << b << '\n';
    while (!(c == 1 && d == 1)) {
        cout << c << '/' << d << '\n';
        int k = (n + b) / d;
        int e = k * c - a;
        int f = k * d - b;
        a = c; b = d;
        c = e; d = f;
    }
    cout << "1/1\n";
    return 0;
}