//Bag of Words Encryption
#include <stdio.h>

int cnt(char s[], char x){
    
    int cnt = 0;
    
    for(int i=0; s[i] != '\0'; i++){
        if(s[i] == x){
            cnt++;
        }
        else{}
    }

    return cnt;
}

int main(void){
    
    int N;
    scanf("%d", &N);

    char S[N+1];
    scanf("%s", S);

    char A[27] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
    char c[27];
    for(int i=0; i<26; i++){
        int k = 0;
        k = cnt(S, A[i]);
        c[i] = '0' + k;
    }
    c[26] = '\0';

    printf("%s\n", c);
}