#include<iostream>
#include<unordered_map>
using namespace std;

unordered_map<int,int> dp;
int main() 
{
    int n,q;
    scanf("%d%d",&n,&q);
    for (int i =0;i<n;i++) 
    {
        int m;
        scanf("%d",&m);
        dp[m] ++;
    }
    while(q--)
    {
        int m;
        scanf("%d",&m);
        if (dp[m] == 0) printf("%d\n",-1);
        else printf("%d\n",dp[m]);
    }
    return 0;
}