#include <bits/stdc++.h>
using namespace std;
#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
using ll = long long;
using pl = pair<ll, ll>;
using pi = pair<int, int>;
#define vt vector
#define f first
#define s second
#define pb push_back
#define all(x) x.begin(), x.end()
#define size(x) ((int) (x).size())
#define FOR(i, a, b) for (int i = (a); i < (b); i++)
#define ROF(i, a, b) for (int i = (b) - 1; i >= (a); i--)
#define F0R(i, b) FOR (i, 0, b)
#define endl '\n'
const ll INF = 1e18;
const int inf = 1e9;
const int maxn = 1e7 + 1;
int m, qs;
int dp[maxn];
vt<int> primes, ans;
vt<pi> queries;
vt<int> evs[maxn];
queue<pi> q;
main() {
cin.tie(0)->sync_with_stdio(0);
cin >> m >> qs;
primes.resize(m);
F0R (i, m) cin >> primes[i];
for (int p : primes) {
int x = p;
while (x < maxn) {
evs[x].pb(p);
x += p;;
}
}
queries.resize(qs);
F0R (i, qs) cin >> queries[i].f, queries[i].s = i;
sort(all(queries));
reverse(all(queries));
ans.resize(qs, -1);
for (int p : primes) {
q.push({0, p});
}
FOR (i, 1, maxn) {
for (int p : evs[i]) {
q.push({i, p});
}
while (q.front().f + q.front().s <= i) {
q.pop();
}
if (q.front().f == i) break;
dp[i] = dp[q.front().f] + 1;
while (size(queries) && queries.back().f == i) {
ans[queries.back().s] = dp[i];
queries.pop_back();
}
if (!size(queries)) break;
}
F0R (i, qs) {
if (ans[i] == -1) cout << "oo\n";
else cout << ans[i] << endl;
}
}
