#include <bits/stdc++.h>

using namespace std;
using ll = long long;

int main(){
    cin.tie(nullptr);
    ios_base::sync_with_stdio(false);

    int N;
    string S;
    cin >> N >> S;
    vector<int> c(26);
    for (auto x : S) c[x-'A']++;
    for (auto x : c) cout << x;
    cout << endl;

    return 0;
}