S=input()
s=[]
tmp=[]
f1,f2=0,0
for e in S:
	if e=="<":
		s+=tmp
		tmp=[e]
	if e=="=":
		if tmp and (tmp[-1]=="<" or tmp[-1]=="="):
			tmp+=e
		else:
			s+=[e]
	if e==">":
		if tmp and tmp[-1]=="=":
			tmp=[]
		else:
			s+=e
	s+=tmp
	print(len(s))