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Four Elements
Easy Accuracy: 46.93% Submissions: 1084 Points: 2

Given an array A of N integers. You have to find whether a combination of four elements in the array whose sum is equal to a given value X exists or not.

Example 1:

Input:
N = 6
A[] = {1, 5, 1, 0, 6, 0}
X = 7
Output:
1

Explantion:
1, 5, 1, 0 are the four elements which makes sum 7.

Your Task:
You don't need to read input or print anything. Your task is to complete the function find4Numbers() which takes the array A[], its size N and an integer as inputs and returns true if combination is found else false. Driver code will print 1 or 0 accordingly.

Expected Time Complexity: O(N3)
Expected Auxiliary Space: O(1)

Constraints:
4 <= N <= 100
1 <= A[i] <= 1000

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Four Elements