摘要： Problem Description 度熊所居住的 D 国，是一个完全尊重人权的国度。以至于这个国家的所有人命名自己的名字都非常奇怪。一个人的名字由若干个字符组成，同样的，这些字符的全排列的结果中的每一个字符串，也都是这个人的名字。例如，如果一个人名字是 ACM，那么 AMC， CAM， MAC， 阅读全文

摘要： Description There is a string S.S only contain lower case English character.(10≤length(S)≤1,000,000)How many substrings there are that contain at leas 阅读全文

摘要： Description You are trapped in a 3D dungeon and need to find the quickest way out! The dungeon is composed of unit cubes which may or may not be fille 阅读全文

摘要： Description Farmer John is an astounding accounting wizard and has realized he might run out of money to run the farm. He has already calculated and r 阅读全文

摘要： Description The SUM problem can be formulated as follows: given four lists A, B, C, D of integer values, compute how many quadruplet (a, b, c, d ) ∈ A 阅读全文

摘要： Description Given n points (1 dimensional) and q segments, you have to find the number of points that lie in each of the segments. A point pi will lie 阅读全文

摘要： Description MG is a lucky boy. He is always be able to find gold from underground. It is known that the gold is a sequence with nelements, which has i 阅读全文

摘要： Description Compared to wildleopard's wealthiness, his brother mildleopard is rather poor. His house is narrow and he has only one light bulb in his h 阅读全文

摘要： Description 对于给出的一串数字，求出该串中最长的连续并且每个数仅出现一次的子序列。 Input 1 5 1 2 3 2 1 Output 3 由于数据范围很大 0~1e9，查找到一个数遍历一遍1e9不现实，这样就需要一种快速识别这个数是否出现过的方法。 就学习了一下set这个容器。 定义 阅读全文

摘要： Description 给出扔球的高度，和初速度，求球最远可以被扔出多远？ Sample Input 2 0 1 1 2 Sample Output 0.10 0.99根据扔的角度不同，球飞出的角度也不同，先推导公式，然后三分角度求出极值。 #include<bits/stdc++.h> using 阅读全文