tup1= map(str, raw_input().strip().split()) 
i=0
s=0
while i<=4:
	if tup1[i]=="A":
		s=s+1
	elif tup1[i]=="B":
		s=s+2
	elif tup1[i]=="C":
		s=s+3
	elif tup1[i]=="D":
		s=s+4
	i=i+1
print s