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Given an array of strings arr[] of size N, find if there exists 2 strings arr[i] and arr[j] such that arr[i]+arr[j] is a palindrome i.e the concatenation of string arr[i] and arr[j] results into a palindrome.

**Example 1:**

Input: N = 6 arr[] = {"geekf", "geeks", "or","keeg", "abc", "bc"}Output:1Explanation: There is a pair "geekf" and "keeg".

**Example 2:**

**Input:**
N = 5
arr[] = {"abc", "xyxcba", "geekst", "or", "bc"}
**Output: **1
**Explanation**: There is a pair "abc"
and "xyxcba".

**Your Task: **

You don't need to read input or print anything. Your task is to complete the function **palindromepair()** which takes the array arr[], its size N** **and returns true if palindrome pair exists and returns false otherwise.

The driver code itself prints 1 if returned value is true and prints 0 if returned value is false.

**Expected Time Complexity:** O(N*l^{2}) where l = length of longest string in arr[]

**Expected Auxiliary Space:** O(N*l^{2}) where l = length of longest string in arr[]

**Constraints:**

1 ≤ N ≤ 10^{4}

1 ≤ |arr[i]| ≤ 10

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Palindrome Pairs

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