代码如下：

#include<bits/stdc++.h>
#include<iostream>
using namespace std;
typedef long long ll;
inline int read(){int x=0,t=1;char ch=getchar();while(ch<'0'||ch>'9'){if(ch=='-') t=-1;ch=getchar();}while(ch>='0'&&ch<='9'){/*x=x*10+ch-'0';*/x=(x<<3)+(x<<1)+(ch^48);ch=getchar();}return x*t;}
inline void write(int x){if(x<0){putchar('-');x=-x;}if(x>9) write(x/10);putchar(x%10+'0');}
int n,m,t,a[1145140]; 

int main(){
	n=read();
	m=read();
	for(int i=1;i<=n;i++){
		a[i]=read();
	}
	while(m--){
		t=read();
		int l=0,r=n,mid,ans=0x7fffffff;
		while(l<r){
			mid=(l+r)>>1;
			if(a[mid]>=t){
				if(a[mid]==t) ans=mid;
				r=mid-1;
			}
			else l=mid+1;
		}
		if(ans!=0x7fffffff) printf("%d ",ans);
		else printf("-1 ");
	}
	return 0;
}