#!/usr/bin/python3
import fileinput

grid = []

def score(x, y):
	global grid
	if x == 0 or y == 0:
		return 0
	if y == len(grid) - 1:
		return 0
	if x == len(grid[y]) - 1:
		return 0

	# Check north
	ht = grid[y][x]
	scenic = 1
	s = 0
	for y1 in range(y - 1, -1, -1):
		s += 1
		if grid[y1][x] >= ht:
			break
	scenic *= s

	# Check south
	s = 0
	for y1 in range(y + 1, len(grid), 1):
		s += 1
		if grid[y1][x] >= ht:
			break
	scenic *= s

	# Check east
	s = 0
	for x1 in range(x + 1, len(grid[y]), 1):
		s += 1
		if grid[y][x1] >= ht:
			break
	scenic *= s

	# Check west
	s = 0
	for x1 in range(x - 1, -1, -1):
		s += 1
		if grid[y][x1] >= ht:
			break
	scenic *= s

	# Nowhere left to check
	return scenic

for line in fileinput.input():
	row = []
	for t in line.rstrip():
		row.append(int(t))
	grid.append(row)

max = 0
for y in range(0, len(grid)):
	for x in range(0, len(grid[y])):
		s = score(x, y)
		if s > max:
			max = s

print(max)