#include using namespace std; typedef long long ll; #define REP(i,n) for(int i=0; i #define VLL vector #define VVI vector> #define VVLL vector> #define VC vector #define VS vector #define VVC vector> #define fore(i,a) for(auto &i:a) typedef pair P; template bool chmax(T &a, T b) { if (a < b) { a = b; return true; } return false; } template bool chmin(T &a, T b) { if (a > b) { a = b; return true; } return false; } const int INF = 2147483647; const ll INFL = 9223372036854775807; const ll mod = 1000000007; int main() { int a, b, c, d; cin >> a >> b >> c >> d; if (d >= 10) { cout << "Impossile" << endl; return 0; } cout << "Possible" << endl; ll ans = 0; int n = 1; while (true) { if (b > 100) { b -= 100; ans += 5000 * n; n *= 2; } else if (a + b >= 100) { int k = 100 - b; ans += 100 * k*n + 50 * b*n; b = 0; a -= k; n *= 2; } else { ans += 100 * a*n + 50 * b*n; break; } } cout << ans << endl; return 0; }