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

int main(void){
//input
	int S; cin >> S;
//calc
	int num = S; vector<int> sq; bool isSquare = false;
	while(S > 0){
		if(sqrt((double)num) == (int)sqrt((double)num)){
			sq.push_back(num);
			S -= num;
			num = S;
			isSquare = true;
		}
		if(!isSquare) num--;
		isSquare = false;
	}
//output
	cout << sq.size() << endl;
    for(int i=0;i<sq.size();i++){
        cout << sq[i];
        if(i != sq.size() - 1) cout << " ";
    }
}