我爱原神

#include<bits/stdc++.h>
using namespace std;
int two(int a[],int x,int L,int R){
	int ans=-1;
	while(L<=R){
		int mid=(L+R)>>1;
        //cout<<mid<<" "<<a[mid]<<"\n";
		if(a[mid]>=x){
			if(a[mid]==x)ans=mid+1;
			R=mid-1;
		}else{
			L=mid+1;
		}
	}
	return ans;
}
int a[int(1e6+114514)];
int main(){
	int n,_;
	cin>>n>>_;
	for(int i=0;i<n;i++)cin>>a[i];
	while(_--){
		int x;
		cin>>x;
		cout<<two(a,x,0,n-1)<<" ";
	}
	return 0;
}