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全部文章（共943篇）

【CodeForces - 244B】Undoubtedly Lucky Numbers （dfs打表 + 二分）

题干： Polycarpus loves lucky numbers. Everybody knows that lucky numbers are positive integers, whose decimal representation (without leading zeroes) c...

2018-11-08

0 528

【CodeForces - 244A 】Dividing Orange （构造，水题）

题干： One day Ms Swan bought an orange in a shop. The orange consisted of n·k segments, numbered with integers from 1 to n·k. There were k children wa...

2018-11-08

0 592

【POJ - 1942 】Paths on a Grid （组合数学，求组合数的无数种方法）

题干： Imagine you are attending your math lesson at school. Once again, you are bored because your teacher tells things that you already mastered years...

2018-11-08

0 500

【POJ - 1850】Code （组合数学，字符串另类排序）

题干： Transmitting and memorizing information is a task that requires different coding systems for the best use of the available space. A well known sy...

2018-11-08

0 456

【POJ - 3320 】Jessica's Reading Problem （尺取，哈希）

题干： Jessica's a very lovely girl wooed by lots of boys. Recently she has a problem. The final exam is coming, yet she has spent little time on it. If...

2018-11-07

0 759

【HDU - 2200】Eddy's AC难题（简单组合数学）

题干： Eddy是个ACMer,他不仅喜欢做ACM题,而且对于Ranklist中每个人的ac数量也有一定的研究,他在无聊时经常在纸上把Ranklist上每个人的ac题目的数量摘录下来，然后从中选择一部分人(或者全部)按照ac的数量分成两组进行比较，他想使第一组中的最小ac数大于第二组中的最大ac数...

2018-11-05

0 420

【POJ - 2301 】Beat the Spread! （简单数学）

题干： Superbowl Sunday is nearly here. In order to pass the time waiting for the half-time commercials and wardrobe malfunctions, the local hackers ...

2018-11-05

0 826

【CodeForces - 349B】Color the Fence （贪心，填数）

题干： Igor has fallen in love with Tanya. Now Igor wants to show his feelings and write a number on the fence opposite to Tanya's house. Igor thinks th...

2018-11-04

0 690

【CodeForces - 706C】Hard problem（dp，字典序）

题干： Vasiliy is fond of solving different tasks. Today he found one he wasn't able to solve himself, so he asks you to help. Vasiliy is given n strin...

2018-11-04

0 700

【HDU - 薛猫猫杯程序设计网络赛】【题解】

A 爬山 Time Limit: 3000/1000 MS (Java/Others) Memory Limit: 65536/65536 K (Java/Others) Total Submission(s): 0 Accepted Submission(s): 0 Proble...

2018-11-03

0 530