#include <bits/stdc++.h>

using namespace std;

void printShortestPath(int n, int i_start, int j_start, int i_end, int j_end) {
   if((i_start-i_end)%2!=0)
   {printf("Impossible");}
   else if((j_start- j_end)!=4||-4)
    {printf("Impossible");
    }
    else if(i_start== i_end&&(i_start- i_end)%2!=0)
    {
        printf("Impossible");
    }
    
}

int main() {
    int n;
    cin >> n;
    int i_start;
    int j_start;
    int i_end;
    int j_end;
    cin >> i_start >> j_start >> i_end >> j_end;
    printShortestPath(n, i_start, j_start, i_end, j_end);
    return 0;
}