摘要：Description You are given a list of non-negative integers, a1, a2, ..., an, and a target, S. Now you have 2 symbols + and -. For each integer, you sho 阅读全文

摘要：description Given an array of integers A, consider all non-empty subsequences of A. For any sequence S, let the width of S be the difference between t 阅读全文