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全部文章（共129篇）

Self-examination

第一次参加省赛，算是真正感受到比赛的残酷。拿到好成绩，需要平时大量的积累，甚至也需要一点运气，然后我还做的不够，但我觉得我可以做得更好。我之前是没有任何基础，大一才刚刚从知码开门入门。然后刚开始一直都没什么自信，感觉跟大佬差太多，他们都是基础好的。后来加入acm集训也是舍友怂恿的，虽然...

2018-05-07

0 496

Miller-Rabin素数检测算法

遇到了一个题： Description: Goldbach's conjecture is one of the oldest and best-known unsolved problems in number theory and all of mathematics. It states:...

数学素数

2018-04-23

0 562

B-Boxes

题目描述 There are N boxes arranged in a circle. The i-th box contains Ai stones. Determine whether it is possible to remove all the stones from t...

找规律

2018-04-19

0 386

Contiguous Repainting

题目描述 There are N squares aligned in a row. The i-th square from the left contains an integer ai. Initially, all the squares are white. Snuke w...

思维

2018-04-19

0 479

K-th K

题目描述 You are given an integer sequence x of length N. Determine if there exists an integer sequence a that satisfies all of the following condition...

模拟

2018-04-19

0 491

Minimum Sum

题目描述 One day, Snuke was given a permutation of length N, a1,a2,…,aN, from his friend. Find the following: Constraints 1≤N≤200,000 (...

单调栈

2018-04-13

0 627

Prefix and Suffix

题目描述 Snuke is interested in strings that satisfy the following conditions: The length of the string is at least N. The first N characters eq...

模拟

2018-04-13

0 568

BBuBBBlesort!

题目描述 Snuke got an integer sequence of length N from his mother, as a birthday present. The i-th (1≦i≦N) element of the sequence is ai. The elements...

贪心

2018-04-11

0 475

Wanna go back home

题目描述 Snuke lives on an infinite two-dimensional plane. He is going on an N-day trip. At the beginning of Day 1, he is at home. His plan is describe...

模拟

2018-04-11

0 436

The Chosen One+高精度

题目描述 Welcome to the 2017 ACM-ICPC Asia Nanning Regional Contest. Here is a breaking news. Now you have a chance to meet alone with the Asia Direc...

java大数

2018-04-11

0 424