#include <algorithm> #include <cstdio> #include <iostream> #include <iomanip> #include <map> #include <cmath> #include <queue> #include <set> #include <sstream> #include <stack> #include <string> #include <vector> #include <stdlib.h> #include <stdio.h> #include <bitset> using namespace std; #define FOR(I,A,B) for(int I = (A); I < (B); ++I) int main(){ int n, m; cin >> n >> m; if(n == 1 && m != 1){ cout << "Impossible" << endl; return 0; } if(n == 2 && m == 0){ cout << "Impossible" << endl; return 0; } cout << "Possible" << endl; return 0; }