#include <bits/stdc++.h>
using namespace std;
const int N=1e6+10;
int a[N];
int n,m;
int x;

int main(){
	scanf("%d %d",&n,&m);
	for(int i=1;i<=n;i++)
		scanf("%d",&a[i]);
	while(m--){
		scanf("%d",&x);
		int l=1,r=n;
		int ans=-1;
		while(l<=r){
			int mid=(l+r)/2;
			if(a[mid]==x){
				ans=mid;
				break;
			}else if(a[mid]<x){
				l=mid+1;
			}else 
				r=mid-1;
		}
		printf("%d\n",ans);
	}
	return 0;
}