#include<iostream>

#include<stdio.h>

#include<algorithm>

#include<iomanip>

#include<cmath>

#include<cstring>

#include<vector>

#define ll __int64

#define pi acos(-1.0)

#define SIZE 1024

using namespace std;

const int mod =;

vector<ll>p;

int main(){

    ll i,j,t;

    ll n,sum,num;

    while(cin>>n){

        p.clear();

        i=j=;

        sum=;

        num=(ll)sqrt(n*1.0);

        while(j<=num){

            sum+=j*j;

            if(sum>=n){

                while(sum>n){

                    sum-=i*i;

                    i++;

                }

                if(sum==n){

                    p.push_back(i);

                    p.push_back(j);

                }

            }

            j++;

        }

        cout<<p.size()/<<endl;

        for(i=;i<p.size();i+=){

            cout<<p[i+]-p[i]+;

            for(j=p[i];j<=p[i+];j++){

                cout<<' '<<j;

            }

            cout<<endl;

        }

    }

    return ;

}