Problem 30 https://projecteuler.net/problem=30 Surprisingly there are only three numbers that can be written as the sum of fourth powers of their digits: 很惊奇地,只有三个数字可以写成它们的位数的四次方之和. 1634 = 14 + 64 + 34 + 448208 = 84 + 24 + 04 + 849474 = 94 + 44 + 74 …

2014多校第五题,当时题面上的10^5写成105,我们大家都wa了几发,改正后我和一血就差几秒…不能忍 题目:http://acm.hdu.edu.cn/showproblem.php?pid=4891 The Great Pan Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others) Total Submission(s): 966    Accepted Submission(s…

题目: A group of two or more people wants to meet and minimize the total travel distance. You are given a 2D grid of values 0 or 1, where each 1 marks the home of someone in the group. The distance is calculated using Manhattan Distance, where distance…

The Great Pan 题目链接: http://acm.hust.edu.cn/vjudge/contest/123554#problem/D Description As a programming contest addict, Waybl is always happy to take part in various competitive programming contests. One day, he was competing at a regional contest of…

http://vjudge.net/contest/view.action?cid=51327#problem/D Description Yoda: May the Force be with you. Master Yoda is the oldest member of the Jedi Council. He conducts preparatory classes of little Younglings up to the moment they get a mentor. All…

一.游戏界面涉及到的功能点 1)数独格子的建模 (1)绘制数独格子要考虑到标记功能 所以要在每个格子内预先塞入9个标记数字,仅数独格子算下来就有9*9*9=729个格子且存在大量嵌套(这导致我在操作Storyboard时每一个修改都要等待至少20s) (2)数独格子内部的Tag标记 为了方便编程时获取相应格子的View,需要把每个格子打上Tag (3)数独格子的初始化 模型初始化包括背景色.填数操作 和 边框粗细的调整 2)“选数视图”与“选标记视图”以及“其他按钮”的建模 3)填数的游戏游戏规…

                                         The Great Pan Time Limit:1000MS     Memory Limit:65536KB     64bit IO Format:%I64d & %I64u Submit Status Description As a programming contest addict, Waybl is always happy to take part in various competitive p…

https://codeforces.com/contest/487/problem/E http://uoj.ac/problem/30 显然割点走过去就走不回来了...可以看出题目跟点双有关 有一个结论:如果在点双中有不同的点a,b,c,那么一定存在点不重复的路径从a到c再到b. 证明(摘自https://codeforces.com/blog/entry/14832): 显然这样的点双中,点数>=3,因此移除任意点或任意边,仍然连通 新建一张网络流图.用边(u,v,w)表示从u到v容量为w…

The Great Pan Time Limit: 1000ms Memory Limit: 65536KB This problem will be judged on HDU. Original ID: 489164-bit integer IO format: %I64d      Java class name: Main   As a programming contest addict, Waybl is always happy to take part in various co…

The Great Pan Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others) Total Submission(s): 827    Accepted Submission(s): 292 Problem Description As a programming contest addict, Waybl is always happy to take part in vario…