import sys
L = list(map(lambda s: [-999]+list(map(int, s))+[-999] ,sys.stdin.read().splitlines()))
L = [[-999]*12] + L + [[-999]*12]
def printgrid():
        for row in L[1:-1]:
                print("".join(map(str,row[1:-1])))
printgrid()
N = []
for s in range(1000):
	D = set()
	print("step",s+1)
	for x in range(1,11):
			for y in range(1,11):
				L[x][y] += 1
	flash = True
	while flash:
		flash = False
		for x in range(1,11):
			for y in range(1,11):
				curr = L[x][y]
				if curr > 9:
					flash = True
					for (i,j) in [(0,1),(1,0),(-1,0),(0,-1),(1,1),(1,-1),(-1,1),(-1,-1)]:
						L[x+i][y+j] += 1 if (x+i,y+j) not in D else 0
					#N+=1
					L[x][y] = 0
					D.add((x,y))  # can't increase its energy for the rest of the turn
	if len(D) == 100:
		print(s)
		N.append(s)
	printgrid()
print(N[0]+1)