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

#define all(x) begin(x), end(x)
#define sz(x) (ll)(x).size()

using ll = long long;
using ld = long double;

ll gcd(ll a, ll b) {return b == 0 ? a : gcd(b, a % b);}

int main() {
	ios_base::sync_with_stdio(false);
	cin.tie(nullptr);

	cout << "possible" << endl;
	cout << "0 0" << endl;
}