#define _USE_MATH_DEFINES

#include <iostream>		//cin, cout
#include <vector>		//vector
#include <algorithm>	//sort,min,max,count
#include <string>		//string,getline, to_string
#include <cstdlib>		//abs(int)
#include <utility>		//swap, pair
#include <deque>		//deque
#include <climits>		//INT_MAX
#include <bitset>		//bitset
#include <cmath>		//sqrt, ceil. M_PI, pow, sin
#include <ios>			//fixed
#include <iomanip>		//setprecision
#include <sstream>		//stringstream
#include <numeric>		//gcd, assumlate
#include <random>		//randam_device
#include <limits>		//numeric_limits
#include <time.h>       //tm

using namespace std;
constexpr int64_t D_MOD = 1000000007;
constexpr int64_t F_MOD = 998244353;


int main() {

    int N;
    cin >> N;

    char c;
    vector<int> C(26);

    for (int i = 0; i < N; i++) {
        cin >> c;
        C.at(c - 'A')++;
    }

    for (int i = 0; i < 26; i++) {
        cout << C.at(i);
    }

    cout << endl;

    return 0;

}