#include<iostream> #include<string> using namespace std; int main(){ int a,b,c,d,e,n,a1,b1,a2,b2,a3,f=1,ans=0; cin>>a>>b>>c>>d; if(d==10)cout<<"Impossible"<<endl; else { n=a+b; e=a/100; b1=b/100; b2=b%100; for (int i=1; i<=b1; i++) { ans+=5000*f; f*=2; } ans+=f*50*b2; a3=100-b2; ans+=f*100*a3; f*=2; a-=a3; a1=a/100; a2=a%100; for (int i=1; i<=a1; i++) { ans+=10000*f; f*=2; } ans+=a2*f*100; cout<<"Possible"<<endl; cout<<ans<<endl; } }