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全部文章（共228篇）

Codeforces Round #433

A. Fraction time limit per test 1 second memory limit per test 512 m...

2017-09-07

0 628

玲珑杯 Round #20

1161 - 康娜的数学课 Time Limit：1s Memory Limit：256MByte Submissions：615Solved：221 DESCRIPTION 康娜上三年级了，老师要教她一些简单的算术。出...

2017-09-07

0 457

Codeforces Round #432

A. Arpa and a research in Mexican wave time limit per test 1 second memory limit per test 256 megabytes i...

2017-09-06

0 516

Codeforces Round #431

A. Odds and Ends time limit per test 1 second memory limit per test 256 megabytes input standard input...

2017-09-06

0 470

Codeforces Round #430

A. Kirill And The Game time limit per test 2 seconds memory limit per test ...

2017-09-06

0 661

2016ACM-ICPC广西邀请赛（三题）

1001 A Math Problem 送分题，问有多少个数 k^k<=n。打表即可。 #include<bits/stdc++.h> using namespace std; long long a[16]={1,1,1,1,1,1,1,1,1,1,1,1,1,1...

2017-09-06

0 505

[多校补题]2017 Multi-University Training Contest 7 solutions BY 杭州二中

1002（待补）有一棵n个点的有根树，标号为0到n−1，iii号点的父亲是floor⌊ki−1⌋号点，求所有子树大小的异或和。1≤n,k≤1018。这是一棵完全k叉树，考虑根的所有孩子，最多只有一个不是满k叉树，对这个孩子进行递归处理即可。k>1时只有log层，...

2017-08-16

0 571

[多校补题]2017 Multi-University Training Contest 6 solutions BY 福州大学

1003 Inversion Inversion Time Limit: 4000/2000 MS (Java/Others) Memory Limit: 65536/65536 K (Java/Others) Total Submission(s): 1826 Accepted ...

2017-08-16

0 631

[多校补题]2017 Multi-University Training Contest 5 solutions BY 吉如一

1006 Rikka with Graph Rikka with Graph Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/65536 K (Java/Others) Total Submission(s): 237...

2017-08-16

0 506

[多校补题]2017 Multi-University Training Contest 4 solutions BY 陈松杨

1003. Counting Divisors 先去打一个1到1e6的素数表，然后去枚举每个素数在区间内的倍数，可以跳着枚举，计算出每个数对应的因子个数，对于每个数的因子个数就等于枚举的因子个数*k+1累乘起来。累加该区间内所有数的统计结果即为最终答案。于是我们考虑枚举...

2017-08-15

0 595