#include <iostream>
#include <vector>
#include <cmath>
using namespace std;

int main(void){
//input
	int S; cin >> S;
//calc
	int num = S; vector<int> sq;
	do{
		do{
			if(sqrt(num * 1.0) == (int)sqrt(num * 1.0)){
				sq.push_back(num);
				S -= num;
				num = S;
			}else{
				num--;
			}
		}while(S > 0);
	}while(sq.size() > 15);
//output
	cout << sq.size() << endl;
	for(int i=0;i<sq.size();i++){
		cout << sq[i];
		if(i != sq.size() - 1){
			cout << " ";
		}
	}
}