from functools import *;c={r[:i]:r[i+2:].split()for r in open(0)if(i:=r.find(': '))};print((b:=cache(lambda n,f=0,d=0:sum(b(p,f|(p=="fft"),d|(p=="dac"))for p in c[n])if n!="out"else f&d))("svr"))