code:

package main

import (
	"fmt"
)

func main() {
	var n, m int
	var a [10010]int
	var b [10010]int
	ans := 0
	fmt.Scan(&n, &m)
	for i := 1; i <= n; i++ {
		fmt.Scan(&a[i])
	}
	for i := 1; i <= m; i++ {
		fmt.Scan(&b[i])
		if b[i] >= 1 && b[i] <= n {
			if a[i] < 200 {
				ans++
			}
		}
	}
	fmt.Print(ans)
}