Number of Pairs

You are given an array a of n integers. Find the number of pairs (i, j) (1 ≤ i < j ≤ n) where the sum of a_i + a_j is greater than or equal to l and less than or equal to r (that is, l ≤ a_i + a_j ≤ r).

For example, if n = 3, a = [5, 1, 2], l = 4 and r = 7, then two pairs are suitable:

• i=1 and j=2 (4 ≤ 5 + 1 ≤ 7);
• i=1 and j=3 (4 ≤ 5 + 2 ≤ 7).

Input

The first line contains an integer t (1 ≤ t ≤ 10^4). Then t test cases follow.

The first line of each test case contains three integers n, l, r (1 ≤ n ≤ 2 ⋅ 10^5, 1 ≤ l ≤ r ≤ 10^9) — the length of the array and the limits on the sum in the pair.

The second line contains n integers a_1, a_2, …, a_n (1 ≤ a_i ≤ 10^9).

It is guaranteed that the sum of n overall test cases does not exceed 2 ⋅ 10^5.

Output

For each test case, output a single integer — the number of index pairs (i, j) (i < j), such that l ≤ a_i + a_j ≤ r.

Example

Input

4 3 4 7 5 1 2 5 5 8 5 1 2 4 3 4 100 1000 1 1 1 1 5 9 13 2 5 5 1 1

Output

2 7 0 1

inputFormat

Input

The first line contains an integer t (1 ≤ t ≤ 10^4). Then t test cases follow.

The first line of each test case contains three integers n, l, r (1 ≤ n ≤ 2 ⋅ 10^5, 1 ≤ l ≤ r ≤ 10^9) — the length of the array and the limits on the sum in the pair.

The second line contains n integers a_1, a_2, …, a_n (1 ≤ a_i ≤ 10^9).

It is guaranteed that the sum of n overall test cases does not exceed 2 ⋅ 10^5.

outputFormat

Output

For each test case, output a single integer — the number of index pairs (i, j) (i < j), such that l ≤ a_i + a_j ≤ r.

Example

Input

4 3 4 7 5 1 2 5 5 8 5 1 2 4 3 4 100 1000 1 1 1 1 5 9 13 2 5 5 1 1

Output

2 7 0 1

样例

4
3 4 7
5 1 2
5 5 8
5 1 2 4 3
4 100 1000
1 1 1 1
5 9 13
2 5 5 1 1

2
7
0
1

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