#include <math.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <assert.h>
#include <limits.h>
#include <stdbool.h>

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

int main() {
    int n; 
    scanf("%i", &n);
    int i_start; 
    int j_start; 
    int i_end; 
    int j_end; 
    scanf("%i %i %i %i", &i_start, &j_start, &i_end, &j_end);
    printShortestPath(n, i_start, j_start, i_end, j_end);
    return 0;
}