#include<stdio.h>
int main()
{
    int n;
    scanf("%d",&n);
    int x1,y1,x2,y2,x,y;
    scanf("%d %d %d %d",&x1,&y1,&x2,&y2);
    if((y1%2!=0)&&(y2%2!=0)&&((y2-y1)%2==0))
    {
        printf("Impossible");
    }
    else  if((y1%2==0)&&(y2%2!=0)&&((x2-x1)%2!=0))
    {
        printf("Impossible");
    }
     else  if((y1%2!=0)&&(y2%2==0)&&((x2-x1)%2!=0))
    {
        printf("Impossible");
    }
   
    return 0;
}