[传智杯 #3 决赛] 序列

输入输出样例

输入 #1

5 5
1 2 3 4 5

输出 #1

4

 

#include 
#define endl '\n'
#define int long long
using namespace std;
constexpr int N = 1e5 + 10, inf = 0x3f3f3f3f;
int arr[N];
void solve()
{
    int n, k;
    cin >> n >> k;
    for (int i = 0; i < n; i++)
    {
        cin >> arr[i];
    }
    int ans = 0;
    for (int i = 0; i < n; i++)
    {
        for (int j = i + 1; j < n; j++)
        {
            if (arr[i] * arr[j] <= k)
            {
                // cout << arr[i] << ' ' << arr[j] << endl;
                ans++;
            }
        }
    }
    cout << ans << endl;
}

signed main()
{
    ios_base::sync_with_stdio(0), cin.tie(0), cout.tie(0);

    solve();

    return 0;
}