#include <bits/stdc++.h>
#include <math.h>
//ここから省略
#define yes (cout<<"Yes"<<endl)
#define no (cout<<"No"<<endl)
using namespace std;

int main(){
long long n;cin>>n;
long long a=sqrt(n);
vector<int> b;
for(int i=a;i>0;i--){
    while(n>=i*i){
        b.push_back(i*i);
        n-=i*i;
    }
    //cout<<n<<endl;
}
cout<<b.size()<<endl;
for(int x:b)cout<<x<<' ';
cout<<endl;
}