import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		
		int N = sc.nextInt();
		String S = sc.next();
		
		char c = 'A';
		
		String answer = "";
		
		for(int i = 0; i < 26; i++) {
			String C = String.valueOf((char)(c + i));
			
			int count = 0;
			
			for(int j = 0; j < N; j++) {
				String s = S.substring(j, j + 1);
				if(C.equals(s)) {
					count++;
				}
			}
			
			answer += count;
		}

		System.out.println(answer);
	}
}