You are given an array target of n integers. From a starting array arr consisting of n 1's, you may perform the following procedure :
x be the sum of all elements currently in your array.i, such that 0 <= i < n and set the value of arr at index i to x.Return true if it is possible to construct the target array from arr, otherwise, return false.
Example 1:
Input: target = [9,3,5] Output: true Explanation: Start with arr = [1, 1, 1] [1, 1, 1], sum = 3 choose index 1 [1, 3, 1], sum = 5 choose index 2 [1, 3, 5], sum = 9 choose index 0 [9, 3, 5] Done
Example 2:
Input: target = [1,1,1,2] Output: false Explanation: Impossible to create target array from [1,1,1,1].
Example 3:
Input: target = [8,5] Output: true
Constraints:
n == target.length1 <= n <= 5 * 1041 <= target[i] <= 109