#include<bits/stdc++.h>
using namespace std;
int n,m,a[1000005],ds,in;
int main(){
	cin>>n>>m;
	for(int i=1;i<=n;i++)scanf("%d",a+i);
	while(m--){
		scanf("%d",&ds);
		in=lower_bound(a,a+n,ds)-a;
		if(ds==a[in])printf("%d ",in);
		else printf("-1 ");
	}
}