#include <iostream>

using namespace std;

int main() {

  int n,k;

  while (cin >> n){

    cin >> k;

    if (n!=0 && k==0 ) cout << "Impossib1e!"<<endl;

    else if (n%k == 0 ) cout <<"Ok!"<<endl;

    else if (n==0 && k==0) cout << "Ok!"<<endl;

    else cout <<"Impossib1e!"<<endl;

  }

  //system("pause");

}