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Given two arrays of equal size **N** and an integer **K**. The task is to check if after permuting both arrays, we get sum of their corresponding element greater than or equal to k i.e **A _{i} + B_{i} >= K **for all i (from

**Example 1:**

**Input :
**a[] = {2, 1, 3},
b[] = { 7, 8, 9 },
k = 10.
**Output :
**True
**Explanation:**
Permutation a[] = { 1, 2, 3 }
and b[] = { 9, 8, 7 }
satisfied the condition a[i] + b[i] >= K.

**Example 2:**

Input :a[] = {1, 2, 2, 1}, b[] = { 3, 3, 3, 4 }, k = 5.Output :FalseExplanation:Since any permutation won't give the answer.

**Your Task: **

You don't need to read input or print anything. Your task is to complete the function **isPossible()** which takes the array **A[]**, **B[]**, its size **N **and an integer **K **as inputs and returns the answer.

**Expected Time Complexity:** O(N. Log(N))

**Expected Auxiliary Space:** O(1)

**Constraints:**

1 ≤ N ≤ 10^{5}

1 ≤ K ≤ 10^{18 }

1 ≤ A_{i}, B_{i} ≤ 10^{17}

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Permutations in array

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