#include <iostream>
using namespace std;

int main() {
	int n;
	cin >> n;
	
	if (n == 0) {
		return 0;
	}
	
	int a = 1;
	
	do {
		cout << a * a << ' ';
		a = a + 1;
	} while (a * a <= n);

	return 0;
}