import java.io.*;
import java.util.Scanner;


public class Main_yukicoder745 {

	private static Scanner sc;
	private static Printer pr;

	private static void solve() {
		int[] a = new int[4];
		for (int i = 0; i < 4; i++) {
			a[i] = sc.nextInt();
		}
		int[] p = {100, 50, 0, 0};

		if (a[3] == 10) {
			pr.println("Impossible");
		} else {
			pr.println("Possible");
			int ans = 0;
			int b = 1;
			int rem = 100;
			for (int i = 1; i >= 0; i--) {
				while (a[i] > 0) {
					int tmp = Math.min(rem, a[i]);
//					pr.printf("%d %d %d%n", i, tmp, b);
					ans += tmp * b * p[i];
					a[i] -= tmp;
					if (tmp == rem) {
						b *= 2;
						rem = 100;
					} else {
						rem -= tmp;
					}
				}
			}
			
			pr.println(ans);
		}
	}

	// ---------------------------------------------------
	public static void main(String[] args) {
		sc = new Scanner(System.in);
		pr = new Printer(System.out);
			
		solve();
			
		pr.close();
		sc.close();
	}

	static class Printer extends PrintWriter {
		Printer(OutputStream out) {
			super(out);
		}
	}
}