백준 - 26004번

 

풀이

 

import java.io.*;

public class Main {
    public static void main(String[] args) throws Exception {
    	BufferedReader br   = new BufferedReader(new InputStreamReader(System.in));
        int num             = Integer.parseInt(br.readLine());
        int[] arr           = new int[26];
        String str          = br.readLine();
        
        for(int i=0; i<str.length(); i++) {
            arr[(int) str.charAt(i) - 65]++;
        }
        
        int min             = Math.min(arr[(int) 'H' - 65], arr[(int) 'I' - 65]);
        min                 = Math.min(min, arr[(int) 'A' - 65]);
        min                 = Math.min(min, arr[(int) 'R' - 65]);
        min                 = Math.min(min, arr[(int) 'C' - 65]);
    	
    	System.out.println(min);
    }
}