问题:https://leetcode.com/problems/valid-perfect-square/?tab=Description Given a positive integer num, write a function which returns True if num is a perfect square else False. 给定一个正数,如果它是某一个数的平方则返回t
题目 Given a positive integer n, find the least number of perfect square numbers (for example, 1, 4, 9, 16, …) which sum to n. For example, given n = 12, return 3 because 12 = 4 + 4 + 4; given n = 13,
题目: Given a positive integer n, find the least number of perfect square numbers (for example, 1, 4, 9, 16, ...) which sum to n. For example, given n = 12, return 3 because 12 = 4 + 4 + 4; given n =
Given a positive integer num, write a function which returns True if num is a perfect square else False. Note: Do not use any built-in library function such as sqrt. Example 1: Input: 16 Returns:
Given a positive integer n, find the least number of perfect square numbers (for example, 1, 4, 9, 16, ...) which sum to n. For example, given n = 12, return 3 because 12 = 4 + 4 + 4; given n = 13,
[b]场景一:询问访客身份[/b] May I have your name, please? What company are you from? Could you tell me what company you are representing? 请问您贵姓? 您是哪个公司的? 能告诉我您代表什么公司吗? [b]场景二:询问是否预约,来访目的[/b] Do you
传送门:CF [前题提要]:一道有意思的数学题 直接想这道题是不好想的(博主当时就完全没有思路).那么考虑将一个大问题分解成一个小问题想一下(感觉这种思考方式在CF题中还是挺常见的),考虑如果同时存在多个完全平方数,那么必然满足存在两个完全平方数.而当我们确定了任意两个数之后,我们就可以反推出其他数. 考虑如果存在两个数同时为完全平方数会发生什么? a [ i ] + x = p 2
题目链接: http://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=24&page=show_problem&problem=124 类型: 哈希 原题: Perfect Software, Inc. has obtained a government contract t