Given an array A of N length and you are also given number B.
You need to find the number of subarrays in A having sum less than B. We may assume that there is no overflow.
Problem Constraints 1 <= N <= 10000, -100<=A[i]<=100, 0<=B<=10000
Example: INPUT:: A----> [1,−2,4,8], B=0, OUTPUT: 2