package main

import (
	"fmt"
)

func main() {
	var n, m int
	fmt.Scan(&n, &m)

	counts := make([]int, 101)
	for i := 0; i < m; i++ {
		var a int
		fmt.Scan(&a)
		counts[a]++
	}

	for d := 100; d >= 1; d-- {
		people := 0
		for _, c := range counts {
			people += c / d
		}
		if people >= n {
			fmt.Println(d)
			return
		}
	}
	fmt.Println(0)
}