#!/usr/bin/env python


from sys import stdin
import re


def read_line():
	for line in stdin:
		yield line

sum = 0
for line in read_line():
	t1 = line.split(":", 2)
	num = int(t1[0].split(" ")[-1])
	rounds = t1[1].split(";")
	red = 0
	green = 0
	blue = 0

	for round in rounds:
		m = re.search("(\d+) blue", round)
		if m:
			blue = max(blue, int(m.group(1)))
		m = re.search("(\d+) red", round)
		if m:
			red = max(red, int(m.group(1)))
		m = re.search("(\d+) green", round)
		if m:
			green = max(green, int(m.group(1)))
	sum += (red * green * blue)

print(sum)