/*

*/
#include <bits/stdc++.h>

using namespace std;
using ll = long long;

#define rep(i, n) for(int i = 0; i < (int)(n); i++)

int main(){

  int n;
  cin >> n;
  string s;
  cin >> s;

  vector<int> x(26);
  rep(i, n){
    x[s[i]-'A']++;
  }
  rep(i, 26){
    cout << x[i];
  }
  cout << endl;

  return 0;
}