#include <bits/stdc++.h>

using namespace std;

int A[5], vis[5], vis2[5], per[5];
bool possible = false;

void solve2(int ans)
{
        bool f = false;
        for(int i=1; i<5; i++)
            if(!vis[i])
                f = true;
        if(!f)
            if(ans==23)
                possible = true;

    if(!possible)
    {
        for(int i=1; i<5; i++)
        {
            if(!vis[i])
            {
                vis[i] = true;
                solve2(ans+per[i]);
                solve2(ans*per[i]);
                solve2(ans-per[i]);
                vis[i] = false;
            }
        }
    }
}

void solve(int k)
{
    if(!possible)
    {
        if(k==5)
            solve2(per[0]);

        for(int i=0; i<5; i++)
        {
            if(!vis2[i])
            {
                vis2[i] = true;
                per[k] = A[i];
                solve(k+1);
                vis2[i] = false;
            }
        }
    }

}

int main()
{
    bool output[27]; int op;
    for(int i=0; i<27; i++)
    {
        bool f = false;
        for(int j=0; j<5; j++)
        {
            cin >> A[j];
            if(A[j]!=0)

                f = true;
    }
    if(!f)
    {
        op = i;
        break;
    }
    solve(0);
    if(possible)
        output[i] = true;
    else
        output[i] = false;
    possible = false;
    }

    for(int i=0; i<op; i++)
    {
        if(output[i])
            cout << "Possible" << endl;
        else
            cout << "Impossible" << endl;
    }
}