import sys
L = list(map(lambda s: [9]+list(map(int, s))+[9] ,sys.stdin.read().splitlines()))
W = len(L[0])
L = [[9]*W] + L + [[9]*W]
H = len(L)

def printgrid():
	for row in L:
		print("".join(map(str,row)))

printgrid()
S = 0
for x in range(1,H-1):
	for y in range(1,W-1):
		p = L[x][y]
		n = L[x-1][y]
		s = L[x+1][y]
		e = L[x][y-1]
		w = L[x][y+1]
		islow =all([p<n,p<s,p<e,p<w])
		print(x,y,p,n,s,e,w)
		if islow:
			print(x,y,p, "is low")
			S+= p+1
print(S)