#include <stdio.h>
#define DMax 60
#define CMax 100000

typedef struct 
					{
						int x,y,dist;
						long produs;
					}tip;

long a[DMax][DMax];
int n,m,k,x1,x2,y1,y2,dx[]={-1,0,1,0},dy[]={0,1,0,-1};
tip C[CMax];

void citire();
int drum();

int main()
{
	freopen("kdrum.in","r",stdin);
	freopen("kdrum.out","w",stdout);
	citire();
	printf("%d\n",drum());
  return 0;
}

void citire()
{
  scanf("%d %d %d\n",&n,&m,&k);
	scanf("%d %d %d %d",&x1,&y1,&x2,&y2);
	for(int i=1;i<=n;i++)
		for(int j=1;j<=m;j++)
			scanf("%ld",&a[i][j]);
}

int drum()
{
	long ic,sc,i;
	tip x;
	ic=1;
	sc=1;
	C[ic].x=x1;
	C[ic].y=y1;
	C[ic].dist=1;
	C[ic].produs=a[x1][y1];
	while(ic<=sc)
		{
			x=C[ic];
			ic++;
			for(i=0;i<=3;i++)
				if(a[x.x+dx[i]][x.y+dy[i]]!=0)
					{
						sc++;
						C[sc].x=x.x+dx[i];
						C[sc].y=x.y+dy[i];
						C[sc].dist=x.dist+1;
						C[sc].produs=x.produs*a[x.x+dx[i]][x.y+dy[i]];
						if((C[sc].x==x2) && (C[sc].y==y2) && (C[sc].produs%k==0))
						  return C[sc].dist;
					}
		}
  return -1;
}