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

int main() {
    ios::sync_with_stdio(0);
    cin.tie(0);
    int n;
    cin >> n;

    cout << 95 << endl;
    for (int i=1; i<16; i++)
        cout << 2*i << ' ' << 2*i+1 << endl;
    for (int i=32; i<64; i++)
        cout << ((n&(1<<(63-i)))?i:-1) << ((i%2==0)?' ':'\n');
    for (int i=32; i<63; i++)
        cout << i+1 << ' ' << ((i+1)+32) << endl;
    
    cout << "-1 95\n";
    
    for (int i=32; i<63; i++)
        cout << i+1 << ' ' << ((i+1)+32) << endl;

    cout << "-1 -1\n";
    
    return 0;
}