D. k-Interesting Pairs Of Integers time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Vasya has the sequence consisting of n integers. Vasya consider the pair of integers x and y k-interestin…
10.25 去打 CF,然后被 CF 打了. CF EDU 75 A. Broken Keyboard 精神恍惚,WA 了一发. B. Binary Palindromes 比赛中的憨憨做法,考虑一个串的 case,只有"长度为偶数,01都出现奇数次",才会变不出回文串,我们称这样的串为 Bad 的,其它串是 Good 的.两个 Bad 串,之间交换一个 01,可都变成 Good 的.如果 Bad 串有奇数个,那么必存在一个长度为奇数的串才可能合法. C. Minimize The I…
VK Cup 2012 Round 3 (Unofficial Div. 2 Edition) 代码 VK Cup 2012 Round 3 (Unofficial Div. 2 Edition) A. Problem About Equation 每个杯子体积\[V=\frac{b+\sum{a_i}}{n}\] 判断是否有\(a_i > V\). B. File List 处理出'.'的位置. 第一个'.'和最后一个'.'特判字符长度是否合法. 连续的两点位置差\(d\in[2, 11]\)…
VK Cup 2015 - Round 1 (unofficial online mirror, Div. 1 only)E. The Art of Dealing with ATM Time Limit: 2 Sec Memory Limit: 256 MBSubmit: xxx Solved: 2xx 题目连接 http://codeforces.com/contest/529/problem/E Description ATMs of a well-known bank of a sm…
Codeforces Round #423 (Div. 1, rated, based on VK Cup Finals) A.String Reconstruction B. High Load C. DNA Evolution 题意:给定一个只包含A,T,C,G的字符串S,有如下两种操作 1)修改一个点的字母. 2)给定一个字符串e ($\left | e \right |\leq 10$),生成一个由e重复组成的新串,eee...,问$S_{l..r}$中有几个字母跟这个新的字符串一一对应…
Codeforces Round #405 (rated, Div. 2, based on VK Cup 2017 Round 1) 全场题解 菜鸡只会A+B+C,呈上题解: A. Bear and Big Brother 题意:我也没看太清,就是给你两个10以内的数a,b.a每天乘以3,b每天乘以2,求多少天后a大于b. 思路:应该是有公式的,不过看到数据这么小直接暴力乘求解.官方题解貌似就是这样,数据小就是水题. const int N=1e3+10; int main() { int a…
A. Vicious Keyboard time limit per test:2 seconds memory limit per test:256 megabytes input:standard input output:standard output Tonio has a keyboard with only two letters, "V" and "K". One day, he has typed out a string s with only t…