#include<iostream>
#include<vector>
#include<cassert>
#include<cmath>
using namespace std;
long sq(long N)
{
	long r=sqrt(N);
	while((r+1)*(r+1)<=N)r++;
	return r;
}
vector<long>solve(long N,int d)
{
	if(N==0)return{};
	long t=sq(N);
	vector<long>A=solve(N-t*t,d+1);
	A.push_back(t*t);
	if(t>1&&N>t*t&&A.size()+d>15&&d<15)
	{
		t--;
		vector<long>B=solve(N-t*t,d+1);
		B.push_back(t*t);
		if(A.size()>B.size())A=B;
	}
	return A;
}
int main()
{
	ios::sync_with_stdio(false);
	cin.tie(nullptr);
	long S;
	cin>>S;
	vector<long>A=solve(S,0);
	cout<<A.size()<<endl;
	for(long v:A)cout<<v<<" ";
	cout<<endl;
}