#include <iostream>
#include <vector>
#include <string>
#include <algorithm>
#include <math.h>
#include <queue>
#include <numeric>
#include <map>
#include <atcoder/all>
using namespace atcoder;
using namespace std;

using ll = long long;

#define Sort(a) sort((a).begin(), (a).end())
#define Rev(a) reverse((a).begin(), (a).end())
#define cfs(a) cout << fixed << setprecision(a)

int main()
{
    ll N;
    cin >> N;
    string S;
    cin >> S;
    vector<char> alphabet(26);
    iota(alphabet.begin(), alphabet.end(), 'A');
    map<char, int> mp;
    for (int i = 0; i < 26; i++)
    {
        mp[alphabet[i]] = 0;
    }
    for (int i = 0; i < N; i++)
    {
        mp[S[i]]++;
    }
    for (ll i = 0; i < 26; i++)
    {
        cout << mp[alphabet[i]];
    }
    cout << endl;
}