#include <bits/stdc++.h>
#define pii pair<int, int>
#define f first
#define s second
using namespace std;
int dp[10000069];
int P[10000069];
int a[100069];
int qu[100069];
int mx = 0;
signed main(){
cin.tie(0); ios::sync_with_stdio(0);
int m, q; cin >> m >> q;
for(int i=1; i<=m; i++){
cin >> a[i];
}
for(int i=1; i<=q; i++){
cin >> qu[i];
mx = max(mx, qu[i]);
}
for(int i=1; i<=m; i++){
for(int j=a[i]; j<=mx; j+=a[i]){
P[j] = a[i];
}
}
int ptr = 0;
dp[0] = 0;
P[0] = a[m];
for(int i=1; i<=mx; i++){
while(ptr + P[ptr] <= i){
ptr++;
// cout << ptr << "Push\n";
}
if(ptr == i){
dp[i] = -1;
// if(i==4) cout << "S\n";
} else {
dp[i] = (dp[ptr] == -1) ? -1 : dp[ptr] + 1;
// cout << i << ' ' << dp[i] << "PU\n";
}
// cout << i << ' ' << ptr << "TOP\n";
}
// for(int i=1; i<=10; i++) cout << i << ' ' << dp[i] << "A\n";
for(int i=1; i<=q; i++){
if(dp[qu[i]] == -1) cout << "oo\n";
else cout << dp[qu[i]] << '\n';
}
return 0;
}
/*
2 2
2 3
5
6
*/
