#!/usr/bin/env python3
import re

lines = (x.strip() for x in open("input.txt"))

REG_GAME = re.compile("Game (\d+): (.*)$")
total = 0

for line in lines:
    game, content = REG_GAME.match(line).groups()
    cubes = {"red": 0, "green": 0, "blue": 0}
    for cube in (y for x in content.split("; ") for y in x.split(", ")):
        [n, color] = cube.split(" ")
        cubes[color] = max(cubes[color], int(n))
    total += cubes["red"] * cubes["green"] * cubes["blue"]

print(total)