#include <bits/stdc++.h> using namespace std;

int main() { #include <bits/stdc++.h> using namespace std;

int main() {
	for (int i = 1000; i <= 9999; i++) {
		int a = 0, s = 0;
		a = i / 100;
		s = i % 100;
		if ((a + s) * (a + s) == i) {
			cout << i << " ";
		}
	}
	return 0;
}

}