#include <bits/stdc++.h>
using ll=long long;
const long long INF=1LL<<60;
int main(){
    ll n;
    std::string s;
    std::cin >> n >> s;
    std::vector<ll>count(26);
    for(const auto&c:s)count[c-'A']++;
    for(auto&c:count)std::cout << c;
    std::cout << '\n';
}