#include <bits/stdc++.h>
using namespace std;
const long long MOD = 1e9 + 7;
const double PI = 3.14159265359;
int main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);
  string s;
  int n;
  cin >> n;
  if (n % 2)
    cout << "Impossible";
  else
    cout << "Possible";
  return 0;
}
