#!/usr/bin/env python3
import sys
from collections import defaultdict

seen = {}
grid = []

for l in sys.stdin:
    grid.append([int(x) for x in l.strip()])


def search(r, c, color):
    if (r, c) in seen or grid[r][c] == 9:
        return

    seen[(r, c)] = color
    if r > 0:
        search(r - 1, c, color)
    if c > 0:
        search(r, c - 1, color)
    if c < 99:
        search(r, c + 1, color)
    if r < 99:
        search(r + 1, c, color)


# Search from each point (no-op once seen once)!
i = 1
for r in range(100):
    for c in range(100):
        search(r, c, i)
        i += 1

# Finally, count the colors
G = defaultdict(int)
for v in seen.values():
    G[v] += 1

top = sorted(G.values(), reverse=True)
print(top[0] * top[1] * top[2])