#include<iostream>
using namespace std;

int main() {
	int a, b;
	while (cin >> a >> b) {
		if (a == 0) cout << "Ok!" << endl;
		else if (b == 0) cout << "Impossib1e!" << endl;
		else if (a % b == 0) cout << "Ok!" << endl;
		else cout << "Impossib1e!" << endl; 
	}
}