import sys
input = sys.stdin.readline
from collections import deque

N,V,x,y,zz,ww=map(int,input().split())
MAP=[list(map(int,input().split())) for i in range(N)]

x,y=y,x
zz,ww=ww,zz
V=min(V,2000)
x-=1
y-=1
zz-=1
ww-=1
DP=[[1<<30]*(N*N) for i in range(V+1)]

DP[V][x*N+y]=0

Q=deque()
Q.append((0,V,x*N+y))

while Q:
    now,power,xy=Q.popleft()

    x=xy//N
    y=xy%N

    for z,w in [(x+1,y),(x-1,y),(x,y+1),(x,y-1)]:
        if 0<=z<N and 0<=w<N:
            nec=z*N+w
            dec=MAP[z][w]

            if power-dec>0 and DP[power-dec][nec]>now+1:
                DP[power-dec][nec]=now+1
                Q.append((now+1,power-dec,nec))

ANS=1<<30
for i in range(V+1):
    ANS=min(ANS,DP[i][zz*N+ww])

if ANS==1<<30:
    print(-1)
else:
    print(ANS)