// Born_To_Laugh - Hughie Do
#include <bits/stdc++.h>
#define alle(AC) AC.begin(), AC.end()
#define fi first
#define se second
using namespace std;
typedef long long ll;
[[maybe_unused]] const ll MOD = 998244353, INF = 1e9 + 7;
const ll maxn = 1e7 + 10;
int isprime[maxn];
inline void sieve(){
int n = maxn - 1;
for(int i=1; i<=n; ++i) isprime[i] = i;
for(int i=2; i * i <= n; ++i){
if(isprime[i] == i){
for(int j = i * i; j<=n; j += i) isprime[j] = i;
}
}
}
class SEGTREE
{
private:
int n;
vector<int> tree;
inline void upd(int id, int l, int r, int pos, int val){
if(l == r){
tree[id] = min(tree[id], val);
return;
}
int mid = (l + r) >> 1;
if(pos <= mid) upd(id << 1, l, mid, pos, val);
else upd(id << 1|1, mid + 1, r, pos, val);
tree[id] = min(tree[id << 1], tree[id << 1|1]);
}
inline int qr(int id, int l, int r, int lo, int hi){
if(l > hi || r < lo) return INF;
else if(l >= lo && r <= hi) return tree[id];
int mid = (l + r) >> 1;
return min(qr(id << 1, l, mid, lo, hi), qr(id << 1|1, mid + 1, r, lo, hi));
}
public:
inline void init(int len){
n = len;
tree.assign(n << 2, INF);
}
inline void upd(int pos, int val){
upd(1, 0, n - 3, pos, val);
}
inline int qr(int lo, int hi){
return qr(1, 0, n - 3, lo, hi);
}
};
inline ll lcm(int a, int b){
return (ll)a * b / gcd(a, b);
}
int m, q;
set<int> s;
SEGTREE st;
ll lcma = 1;
int dp[maxn];
int suff[maxn];
int ok[maxn];
void solve(){
cin >> m >> q;
for(int i=1; i<=m; ++i){
int x;cin >> x;
ok[x] = 1;
if(lcma < maxn) lcma = lcm(lcma, x);
}
sieve();
st.init(maxn);
st.upd(0, 0);
for(int i=1; i<=min(maxn - 1, lcma); ++i){
dp[i] = INF;
int x = i + 1;
int num = -1;
while(x != 1){
if(ok[isprime[x]]){
num = max(num, isprime[x]);
}
x /= isprime[x];
}
if(num == -1) continue;
dp[i] = min(dp[i], st.qr(i + 1 - num, i - 1) + 1);
st.upd(i, dp[i]);
}
// for(int i=1; i<=min(maxn - 1, lcma); ++i) cout << dp[i] << ' ';
// cout << '\n';
suff[min(maxn - 1, lcma)] = dp[min(maxn - 1, lcma)];
for(int i=min(maxn - 2, lcma - 1); i>=1; --i){
suff[i] = min(int(dp[i] == 0 ? INF : dp[i]), suff[i + 1]);
}
while(q--){
int x;cin >> x;
if(x >= lcma || suff[x] >= INF) cout << "oo\n";
else cout << suff[x] << '\n';
}
}
signed main(){
ios_base::sync_with_stdio(false);
cin.tie(nullptr);
solve();
}
