cat displays the contents of a file at the command line copies or apppend text file into a document cat [OPTIONS] .. [FILE] head prints the first part of the files head [ OPTION] … [FILE] tail prints the last part of files tail [OPTION] … [FILE] … mo
Yandex.Algorithm 2018, final round A Smart Vending B LIS vs. LDS C Eat And Walk D Search Engine E Guess Me If You Can 思路:如果n这个位置加1的话,不同的数的个数要么不变,要么加1,反之,如果不同的数的个数减少,肯定不是n这个位置加1 我们random_shuffle()50次,每次把不是n的位置标记一下,这样有很大的概率把所有的不是n的位置都标记了 代码: #pragma GC
题目链接: Sum of Medians Time Limit:3000MSMemory Limit:262144KB 问题描述 In one well-known algorithm of finding the k-th order statistics we should divide all elements into groups of five consecutive elements and find the median of each five. A median is cal
Atoms: There and Back Again Time limit 2 seconds Memory limit 256Mb Input stdin Output stdout Legend Yura and Roman got bored with the original “Atoms” board game and came up with a better game that uses the same playing set. The game starts with one
题目链接:点击传送 D. Powerful array time limit per test 5 seconds memory limit per test 256 megabytes input standard input output standard output An array of positive integers a1, a2, ..., an is given. Let us consider its arbitrary subarray al, al + 1..., ar
题面 题意:有10w个点,问你选4个点,能组成平行于坐标轴的正方形有多少个 题解:不知道正解,我的做法就是暴力的基础上优化一点,每次按x排好序,每次枚举的2个点都是x相同的 这样算是个优化?但并不能过,因为可能一列全是x相同的,于是又判了一次对于这个点,x相同的多还是y相同的多 具体实现用了个set没想到就过了 #include<bits/stdc++.h> using namespace std; #define N 2000006 set<int>x[N],y[N]; ; in
