PKU OJ 1002 487-3279 487-3279 Description Businesses like to have memorable telephone numbers. One way to make a telephone number memorable is to have it spell a memorable word or phrase. For example, you can call the University of Waterloo by dialin…
Given a binary tree, check whether it is a mirror of itself (ie, symmetric around its center). For example, this binary tree is symmetric: 1 / \ 2 2 / \ / \ 3 4 4 3 But the following is not: 1 / \ 2 2 \ \ 3 3 Note:Bonus points if you could solve it b…
这个估计是里面第二简单的了,因为第一简单的是求a+b 哈哈,一submit就ac了 题目如下: Description How far can you make a stack of cards overhang a table? If you have one card, you can create a maximum overhang of half a card length. (We're assuming that the cards must be perpendicular to…
ExponentiationTime Limit: 500MS Memory Limit: 10000KTotal Submissions: 155886 Accepted: 37967 Description Problems involving the computation of exact values of very large magnitude and precision are common. For example, th…
