use std::vec;

fn main() {
    let inpt = getline();
    let inpt_vec:Vec<_>=inpt.trim().split(' ').collect();
    let mut n:i32 = inpt_vec[0].parse().unwrap();
    let s = getline();

    let mut ans = vec![0;26];
    for i in 0..(n as usize) {
        let num = s.chars().nth(i).unwrap() as i32 - 'A' as i32;
        ans[num as usize]+=1;
    }
    for i in ans {
        print!("{}",i);
    }
    println!();
}

fn getline() -> String {
    let mut _ret = String::new();
    std::io::stdin().read_line(&mut _ret).ok();
    return _ret;
}