#include <bits/stdc++.h>
using ll=long long;
#define rep(i,s,n) for (ll i = (s); i < (n); i++)
using namespace std;
using Graph = vector<vector<ll>>;
ll MOD=1e9+7;
const ll INF=1e18;


int main(){
  ll N;
  cin>>N;
  string S;
  cin>>S;
  vector<ll> C(26);
  rep(i,0,N){
    C[S[i]-'A']++;
  }
  rep(i,0,26){
    cout<<C[i];
  }
  cout<<"\n";
}