#include <iostream>
#include <fstream>

using namespace std;

ifstream in("submultimi.in");
ofstream out("submultimi.out");
int n;
const int NMAX = 18;
typedef int stiva[NMAX];
stiva st;
int vf;

int ok()
{
    if(vf > 1)
    {
        if(st[vf] <= st[vf-1])
            return 0;
    }
    return 1;
}

void afisare()
{
    for(int i=1;i<=vf;i++)
    out<<st[i]<<" ";
    out<<"\n";
}

int main()
{
    in>>n;
    in.close();
    vf = 1;
    st[vf] = 0;
    int nr = 0;
    while(vf)
    {
        st[vf]++;
        if(st[vf] > n)
            vf--;
        else
        {
            if(ok() && vf<=n)
            {
                nr++;
                    afisare();
                    st[++vf] = 0;
            }
        }
    }
    out<<nr<<"\n";
    out.close();
    return 0;
}