木桶效应，一个数组记录，最小数值即得分 

import java.util.*;

public class Main {
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int m = sc.nextInt();
        int[] ints = new int[n];
        for(int i = 0; i < m; i++){
            int temp = sc.nextInt();
            ints[temp - 1]++;
        }
        int min = ints[0];
        for(int i = 0; i < n; i++){
            if(ints[i] < min){
                min = ints[i];
            }
        }
        System.out.println(min);

    }
}