#include <cmath>
#include <cstdio>
#include <vector>
#include <iostream>
#include <algorithm>
using namespace std;


int main() {
    /* Enter your code here. Read input from STDIN. Print output to STDOUT */   
    int n;
    cin>>n;
    int a,b,c,d,f;
    cin>>a>>b>>c>>d;
    if((a%2)!=(c%2))
        cout<<"Impossible";
    return 0;
}