using namespace std;
long long a[99999999], b, c, d, e, f = 1, g, h, j, k, l;

int main() {
	cin >> b >> c >> d;
	g = b;
	for (int i = 1;; i++) {
		f *= 10;
		g /= f;
		if (g < 10) {
			break;
		}
	}
	for (int i = 1; i <= d; i++) {
		e = b % 10;
		b /= 10;
		h = e * e;
		if (h >= 10) {
			h %= 10;
		}
		b += h * f;
		a[i] = b;
		if (b == c) {
			for (int j = 1; j <= i; j++)
				cout << a[j] << endl;
			break;
		}
	}
	if (b != c) {
		cout << "-1";
	}
	return 0;
}