Given an array, we need to find two subarrays with a specific length K such that sum of these subarrays is maximum among

all possible choices of subarrays.

arr size <10^5

n<10^3

Examples:

Input : arr[] = [2, 5, 1, 2, 7, 3, 0]

K = 2

Output : 2 5

7 3

We can choose two arrays of maximum sum

as [2, 5] and [7, 3], the sum of these two

subarrays is maximum among all possible

choices of subarrays of length 2.

Input : arr[] = {10, 1, 3, 15, 30, 40, 4, 50, 2, 1}

K = 3

Output : 3 15 30

40 4 50