1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
#include <bits/stdc++.h>

using namespace std;

const int N = 92;

int tab[N][2];

void printa() {
    for (int i = 0; i < N; i++) {
        cout << tab[i][0]+1 << " " << tab[i][1]+1 << endl;
    }
}

int k;
int main() {
    cin >> k;
    cout << N << endl;
    int b;

    for (int i = 0; i < N; i++) {
        tab[i][0] = -2;
        tab[i][1] = -2;
    }

    for (int i = 0; i < 30; i++) {
        b = i*3;
        tab[b][0] = b+1;
        tab[b][1] = b+2;
        if (i < 29) {
            tab[b+1][0] = b+4;
            tab[b+1][1] = b+5;
        }
        tab[b+2][0] = b+3;
    }

    int i = 0;
    while (k) {
        if (k%2) {
            tab[i*3+2][1] = N-1;
        }
        k /= 2;
        i++;
    }
    printa();

}