n=input()
s=input()
d=dict()
for e in s:
	if e not in d:
		d[e]=1
	else:
		d[e]+=1
ans=""
for i in range(26):
	x=chr(ord("A")+i)
	if x in d:
		ans+=str(d[x])
	else:
		ans+="0"
print(ans)