123 lines
2.1 KiB
C++
123 lines
2.1 KiB
C++
// {{{
|
|
#include <bits/stdc++.h>
|
|
|
|
// https://codeforces.com/blog/entry/96344
|
|
|
|
#pragma GCC optimize("O2,unroll-loops")
|
|
#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
|
|
|
|
using namespace std;
|
|
|
|
template <typename T>
|
|
constexpr T MIN = std::numeric_limits<T>::min();
|
|
|
|
template <typename T>
|
|
constexpr T MAX = std::numeric_limits<T>::max();
|
|
|
|
template <typename T>
|
|
[[nodiscard]] static T sc(auto&& x) {
|
|
return static_cast<T>(x);
|
|
}
|
|
|
|
template <typename T>
|
|
[[nodiscard]] static T sz(auto&& x) {
|
|
return static_cast<T>(x.size());
|
|
}
|
|
|
|
template <typename... Args>
|
|
void pr(std::format_string<Args...> fmt, Args&&... args) {
|
|
std::print(fmt, std::forward<Args>(args)...);
|
|
}
|
|
|
|
template <typename... Args>
|
|
void pr(std::format_string<Args...> fmt) {
|
|
std::print(fmt);
|
|
}
|
|
|
|
template <typename... Args>
|
|
void prln(std::format_string<Args...> fmt, Args&&... args) {
|
|
std::println(fmt, std::forward<Args>(args)...);
|
|
}
|
|
|
|
template <typename... Args>
|
|
void prln(std::format_string<Args...> fmt) {
|
|
std::println(fmt);
|
|
}
|
|
|
|
void prln() {
|
|
std::println();
|
|
}
|
|
|
|
void prln(auto const& t) {
|
|
std::println("{}", t);
|
|
}
|
|
|
|
using ll = long long;
|
|
using ld = long double;
|
|
template <typename T>
|
|
using vec = std::vector<T>;
|
|
|
|
#define ff first
|
|
#define ss second
|
|
#define eb emplace_back
|
|
#define pb push_back
|
|
#define all(x) (x).begin(), (x).end()
|
|
#define rall(x) (x).rbegin(), (x).rend()
|
|
// }}}
|
|
|
|
bitset<2 * 100000 + 5 + 1> used;
|
|
vec<int> I;
|
|
|
|
void solve() {
|
|
ll n, x;
|
|
cin >> n >> x;
|
|
vec<ll> a(n);
|
|
for (auto& e : a)
|
|
cin >> e;
|
|
|
|
used.reset();
|
|
I = {1};
|
|
|
|
ll ans = 1;
|
|
|
|
for (auto number : a) {
|
|
if (x % number)
|
|
continue;
|
|
vec<int> nxt;
|
|
for (auto i : I) {
|
|
if (i * number >= sz<ll>(used))
|
|
continue;
|
|
if (i * number == x) {
|
|
++ans;
|
|
used.reset();
|
|
used[number] = true;
|
|
I.clear();
|
|
nxt = {1};
|
|
nxt.pb(number);
|
|
break;
|
|
}
|
|
if (!used[i * number]) {
|
|
nxt.pb(i * number);
|
|
used[i * number] = true;
|
|
}
|
|
}
|
|
I.insert(I.end(), all(nxt));
|
|
}
|
|
|
|
prln("{}", ans);
|
|
}
|
|
|
|
// {{{
|
|
int main() {
|
|
cin.tie(nullptr)->sync_with_stdio(false);
|
|
|
|
ll t = 1;
|
|
cin >> t;
|
|
|
|
while (t--) {
|
|
solve();
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
// }}}
|