#VSTUP:
# n m - rozmery
# n riadkov, m stlpcov: '.' prazdne policko, '#' stena/prekazka
# Sr Ss - pozicia startu (riadok, stlpec)
# Cr Cs - pozicia ciela (riadok, stlpec)
 
import queue
 
n,m = [int(_) for _ in input().split()]
mapa = [[_ for _ in input()] for r in range(n)]
 
Sr,Ss = [int(_) for _ in input().split()]
Cr,Cs = [int(_) for _ in input().split()]
print("Nacitane")
print(n,m)
print(Sr, Ss)
print(Cr, Cs)
print(mapa[2]) #vypise treti riadok
print(*mapa[2]) #vypise treti riadok
print("".join(mapa[2])) #vypise treti riadok
print(mapa[2][3]) # prvok na riadku 2 a stlpci 3
 
print("Cela mapa:")
for r in range(n):
	print("".join(mapa[r]))
 
mapa[Sr][Ss] = 0
policka = queue.Queue() #novy rad, zoznam policok z ktorych treba dalej pokracovat
policka.put( (Sr, Ss) ) # usporiadana dvojica - riadok, stlpec
 
def da_sa(r, s):
	if not (0 <= r < n): return False
	if not (0 <= s < m): return False
	return mapa[r][s] == '.'
 
while not policka.empty(): #ak treba este nejake policka spracovat
	r,s = policka.get() #vyberieme prve policko
	#print(r,s)
	#pozerame na vsetky smery a hladame "prazdne" nenavstivene policko = '.'
	for smer in [(1,0), (-1, 0), (0, 1), (0, -1),
				 (1,1), (-1, 1), (-1, -1), (1, -1)]: #smery pohybu
		nr, ns = r+smer[0], s+smer[1] #policko posunute v danom smere
		if da_sa(nr, ns):
			mapa[nr][ns] = 1+mapa[r][s] #nastavime najmensiu vzdialenost
			policka.put( (nr,ns) ) #pridaj policko na spracovanie
 
print("Cela mapa:")
for r in range(n):
	print(*mapa[r])
print(mapa[Cr][Cs])

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