#include <bits/stdc++.h>
#define rep(i,n) for(ll i=0;i<(ll)(n);i++)
#define all(x) x.begin(), x.end()
using namespace std;
using ll=long long;
using ld=long double;
using P=pair<ll,ll>;
#include <atcoder/all>
using namespace atcoder;
//using mint=static_modint<998244353>;
using mint=static_modint<1000000007>;


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