#!/usr/bin/env python3

lines = (x.strip() for x in open("input.txt"))
rules = {}
sum = 0


def yield_rule(line, rule, depth):
    if len(rule) > 0:
        elem, *tail = rule
        for rest in check(line, elem, depth-1):
            yield from yield_rule(rest, tail, depth-1)
    else:
        yield line


def check(line, idx, depth):
    if depth < 0:
        return
    rs = rules[idx]
    if isinstance(rs, str):
        if line.startswith(rs):
            yield line[len(rs):]
    else:
        for rule in rules[idx]:
            yield from yield_rule(line, rule, depth)


for line in lines:
    line = '11: 42 31 | 42 11 31' if line.startswith('11:') else line
    line = '8: 42 | 42 8' if line.startswith('8:') else line
    if ":" in line:
        idx, r = line.split(": ")
        idx = int(idx)
        r = r[1:len(r)-1] if r.startswith('"') else [[int(num) for num in x.split()] for x in r.split(" | ")]
        rules[idx] = r
    elif line != "":
        for rest in check(line, 0, len(line)):
            if rest == "":
                sum += 1
print(sum)