#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{
		if(sqrt(num * 1.0) == (int)sqrt(num * 1.0)){
			sq.push_back(num);
			S -= num;
			num = S;
		}else{
			num--;
		}
	}while(S > 0);
//output
	cout << sq.size() << endl;
	for(int i=0;i<sq.size();i++){
		cout << sq[i];
		if(i != sq.size() - 1){
			cout << " ";
		}
	}
}