def I(): return input()
def N(): return int(input())
def M(): return map(int,input().split())
def L(): return list(map(int,input().split()))

#-----------------------------------------

N = N()
s = I()
dec ={}
for i in range(N):
  if s[i] in dec:
    dec[s[i]] += 1
  else:
    dec[s[i]] = 1

eng = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
for a in eng:
  if a in dec:
    print(dec[a],end='')
  else:
    print(0,end="")