#include<bits/stdc++.h>
using namespace std;
int main()
{
	long long  n;
	cin>>n;
	
	vector<long long>v;
	
	while(n!=0){
		
		long long k= sqrt(n);
		v.push_back(k*k);
		
		n-=(k*k);
		
	}
	
	cout<<v.size()<<endl;
	for(auto it:v)
	cout<<it<<" ";
	cout<<endl;
}