#!/usr/bin/env python

TGRID = [] # heights
VGRID = [] # scenic score

def count_visible(x, y, xr, yr):
    target = TGRID[y][x]
    count = 0

    for y in yr:
        for x in xr:
            if TGRID[y][x] >= target:
                if x > 0 and y > 0:
                    count += 1
                return count
            count+=1
    return count

with open('input') as f:
    for line in f:
        l = []
        for tree in line.rstrip():
            l.append(int(tree))
        TGRID.append(l)

max_y = len(TGRID)
for y in range(0, max_y):
    max_x = len(TGRID[y])
    l = []
    for x in range(0, max_x):
        l.append(
            count_visible(x, y, range(x, x+1), range(y-1, -1, -1)) * # north
            count_visible(x, y, range(x+1, max_x), range(y, y+1)) * # east
            count_visible(x, y, range(x, x+1), range(y+1, max_y)) * # south
            count_visible(x, y, range(x-1, -1, -1), range(y, y+1)) # west
        )
    VGRID.append(l)

best_seen = 0
for y in range(0, len(VGRID)):
    for x in range(0, len(VGRID[y])):
        if VGRID[y][x] > best_seen:
            best_seen = VGRID[y][x]

print(best_seen)