#include <bits/stdc++.h>
#include<iostream>
#include<map>
#include<vector>
#include <algorithm>
#include<math.h>
#include <iomanip>
#include<set>
#include <numeric>
#include<string>
using ll = long long;
using namespace std;

int main(){
    ll s, n = 0;
    cin >> s;
    vector<ll> ans;
    while (n*n <= s){
        n++;
    }
    while (s){
        if (n*n > s) n--;
        else {
            ans.push_back(n*n);
            s -= n*n;
        }
    }
    string delim = "";
    cout << ans.size() << endl;
    for (auto x : ans){
        cout << delim << x;
        delim = " ";
    }
    cout << endl;
}