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SPOJ:Ada and Orange Tree (LCA+Bitset)
Ada the Ladybug lives near an orange tree. Instead of reading books, she investigates the oranges. The oranges on orange tree can be in up to 5*50 Sha ...
分类:其他好文   时间:2018-04-23 19:52:26    阅读次数:167
SPOJ:Fibonacci Polynomial(矩阵递推&前缀和)
Problem description. The Fibonacci numbers defined as f(n) = f(n-1) + f(n-2) where f0 = 0 and f1 = 1. We define a function as follows D(n,x) = x + x^2 ...
分类:其他好文   时间:2018-04-20 23:46:38    阅读次数:193
SPOJ:Just One Swap(统计&思维)
You are given an array of size N. How many distinct arrays can you generate by swapping two numbers for exactly once? The two selected numbers can be ...
分类:其他好文   时间:2018-04-20 22:13:40    阅读次数:211
SPOJ:The Next Palindrome(思维)
A positive integer is called a palindrome if its representation in the decimal system is the same when read from left to right and from right to left. ...
分类:其他好文   时间:2018-04-19 19:13:50    阅读次数:179
SPOJ-ANDROUND -线段树/与操作
ANDROUND - AND Rounds #tree #tree You are given a cyclic array A having N numbers. In an AND round, each element of the array A is replaced by the bit ...
分类:其他好文   时间:2018-04-14 23:53:01    阅读次数:211
wenbao与后缀数组
倍增算法(da) DC3 http://www.spoj.com/problems/DISUBSTR/ spoj 694 求不同子串的个数 到今天才是1/8的男人 http://poj.org/problem?id=1743(楼教主的男人八题之一) 求不重叠的最长公共串 uva11107 输入n个D ...
分类:编程语言   时间:2018-04-14 15:20:52    阅读次数:196
【SPOJ】Power Modulo Inverted(拓展BSGS)
【SPOJ】Power Modulo Inverted(拓展BSGS) 题面 "洛谷" 求最小的$y$ 满足 $$k\equiv x^y(mod\ z)$$ 题解 拓展$BSGS$模板题 cpp include include include include include include incl ...
分类:其他好文   时间:2018-04-12 22:30:18    阅读次数:177
Spoj-COINS-记忆化dp
COINS - Bytelandian gold coins #dynamic-programming #dynamic-programming In Byteland they have a very strange monetary system. Each Bytelandian gold c ...
分类:其他好文   时间:2018-04-11 19:13:27    阅读次数:157
SPOJ8222/NSUBSTR:Substrings——题解
https://www.luogu.org/problemnew/show/SP8222#sub http://www.spoj.com/problems/NSUBSTR/ 翻译来自洛谷。 你得到一个字符串,最多由25万个小写拉丁字母组成。我们将 F(x)定义为某些长度X的字符串在s中出现的最大次数 ...
分类:其他好文   时间:2018-04-10 10:47:19    阅读次数:183
【SPOJ】QTREE7(Link-Cut Tree)
【SPOJ】QTREE7(Link Cut Tree) 题面 "洛谷" "Vjudge" 题解 和 "QTREE6" 的本质是一样的:维护同色联通块 那么,QTREE6同理,对于两种颜色分别维护一棵$LCT$ 每次只修改和它父亲的连边。 考虑如何维护最大值 因为每次$access$会删去一个数,所以 ...
分类:其他好文   时间:2018-04-09 18:51:40    阅读次数:197
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