negative integer

• 负整数

negative integer的用法和样例：

例句

1. You must specify a non-negative integer.
   必须指定非负整数。
2. Given a cube of positive and negative integers, find the sub-cube with the largest sum.The sum of a cube is the sum of all the elements in that cube.
   给出一个正整数和负整数组成的立方体，找出其中具有最大和的子立方体。