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(共607篇)
【CodeForces - 633D】Fibonacci-ish (离散化,暴力枚举+STPmap,fib数列收敛性质)
题干: Yash has recently learnt about the Fibonacci sequence and is very excited about it. He calls a sequence Fibonacci-ish if the sequence consists...
2018-10-17
0
623
【HDU - 1045】Fire Net (dfs 或二分图)
题干: Suppose that we have a square city with straight streets. A map of a city is a square board with n rows and n columns, each representing a street...
2018-10-17
0
426
【HDU - 4185】Oil Skimming (二分图,建图,匈牙利算法)
题干: Thanks to a certain "green" resources company, there is a new profitable industry of oil skimming. There are large slicks of crude oil ...
2018-10-17
1
485
【51Nod - 1272 】最大距离 (思维,排序sort的空间优化)
题干: 给出一个长度为N的整数数组A,对于每一个数组元素,如果他后面存在大于等于该元素的数,则这两个数可以组成一对。每个元素和自己也可以组成一对。例如:{5, 3, 6, 3, 4, 2},可以组成11对,如下(数字为下标): (0,0), (0, 2), (1, 1), (1, 2), (1,...
2018-10-17
0
482
【POJ - 2226】Muddy Fields(匈牙利算法 或 网络流dinic,二分图匹配,最小点覆盖,矩阵中优秀的建图方式 )
题干: Rain has pummeled the cows' field, a rectangular grid of R rows and C columns (1 <= R <= 50, 1 <= C <= 50). While good for the grass,...
2018-10-15
0
480
【CodeForces - 144C】Anagram Search(尺取,滑窗问题,处理字符串计数)
题干: A string t is called an anagram of the string s, if it is possible to rearrange letters in t so that it is identical to the string s. For example...
2018-10-14
0
494
【CodeForces - 144B 】Meeting (暴力枚举,水题,计算几何)
题干: The Super Duper Secret Meeting of the Super Duper Secret Military Squad takes place in a Super Duper Secret Place. The place is an infinite plane...
2018-10-14
0
420
*【HDU - 2819】Swap(二分图匹配,输出路径)(待证明:是否是最少交换次数?)
题干: Given an N*N matrix with each entry equal to 0 or 1. You can swap any two rows or any two columns. Can you find a way to make all the diagonal en...
2018-10-14
0
462
【CodeForces - 1038A 】Equality (思维水题,预处理字符串)
题干: You are given a string ss of length nn, which consists only of the first kk letters of the Latin alphabet. All letters in string ss are uppercase...
2018-10-13
0
554
【UVA - 10891 Game of Sum 】【HRBUST - 1622】 Alice and Bob (区间dp,博弈问题)
题干: 有一个长度为N的整数序列,Alice和Bob轮流取数,Alice先取。每次玩家只能从左端或者右端 取一个或多个数,但不能两端都取。所有数都被取走后游戏结束,然后统计每个人取走的所有数之和, 作为各自的得分。两个人采取的策略都是让自己的得分尽量高,并且两个人都足够聪明。 Input 输入...
2018-10-13
0
402
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