Codeforces Round #275 (Div. 1)A. Diverse Permutation Time Limit: 1 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/482/problem/A Description Permutation p is an ordered set of integers p1, p2, ..., pn, consisting of n distinct posi…
http://codeforces.com/contest/483/problem/C C. Diverse Permutation time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Permutation p is an ordered set of integers p1, p2, ..., pn, consist…
Codeforces Round #486 (Div. 3) A. Diverse Team 题目连接: http://codeforces.com/contest/988/problem/A Description There are n students in a school class, the rating of the i-th student on Codehorses is ai. You have to form a team consisting of k students…
A. Counterexample time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Your friend has recently learned about coprime numbers. A pair of numbers {a, b} is called coprime if the maximum number th…
最近一直在做 codeforces ,总觉得已经刷不动 BZOJ 了? ——真是弱喵 你看连 Div.2 的 B 题都要谢谢题解,不是闲就是傻 显然我没那么闲 ╮(╯_╰)╭ 我觉得这题的想法挺妙的~ 大意是你需要分别给 a 和 b cnt1 和 cnt2 个数字 但是 a 不要被 x 整除的数 ,as well as,b 不要被 y 整除的数 然后求需要给的最大数的最小值—— 最值的最值?那不是典型的二分吗? 但是——坑爹的英文题导致我完全没有意识到这一点…… 二分答案 v ,因为 a 不要被…
A. Diverse Strings time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output A string is called diverse if it contains consecutive (adjacent) letters of the Latin alphabet and each letter occurs exac…
http://codeforces.com/contest/483/problem/A A. Counterexample time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Your friend has recently learned about coprime numbers. A pair of numbers {a, b…
A 题: 说的是在(LR) 之间找出ab互质 bc 互质 ac 不互质的 3个数 数据量小直接暴力 #include <iostream> #include <cstdio> #include <algorithm> #include <string.h> using namespace std; typedef long long ll; ll gcd(ll a, ll b){ ?a:(gcd(b,a%b)); } int main() { ll L,R;…
题意 : 一个数组 给出m个限制条件 l r z 代表从l 一直 & 到 r 为 z 问能否构造出这种数组 如果可以 构造出来 因为 n m 都是1e5 而l r 可能输入进去就超时了 所以刚写完线段树课件的我想了很久想出来了线段树解法 ... 想法是这样的 每次输入 update 结束后 全部query一遍 看看是否和期望一样 一开始的想法是 存下每个数组的&值 一开始是1<<31 - 1 然后每次进行update 都求出这个区间在树上区间没有被更新到的点的& 三者…
8493833 2014-10-31 08:41:26 njczy2010 B - Friends and Presents GNU C++ Accepted 31 ms 4 KB B. Friends and Presents time limit per test 1 second memory limit per test 256 megabytes input standard input output st…
A. Counterexample time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Your friend has recently learned about coprime numbers. A pair of numbers {a, b} is called coprime if the maximum number th…
C. K-special Tables 题目连接: http://www.codeforces.com/contest/625/problem/C Description People do many crazy things to stand out in a crowd. Some of them dance, some learn by heart rules of Russian language, some try to become an outstanding competitiv…
D. The table 题目连接: http://www.codeforces.com/contest/226/problem/D Description Harry Potter has a difficult homework. Given a rectangular table, consisting of n × m cells. Each cell of the table contains the integer. Harry knows how to use two spells…
C. Harmony Analysis 题目连接: http://www.codeforces.com/contest/610/problem/C Description The semester is already ending, so Danil made an effort and decided to visit a lesson on harmony analysis to know how does the professor look like, at least. Danil…
D. Lazy Student Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/606/problem/D Description Student Vladislav came to his programming exam completely unprepared as usual. He got a question about some strange algorithm on a gr…
D. Regular Bridge Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/550/problem/D Description An undirected graph is called k-regular, if the degrees of all its vertices are equal k. An edge of a connected graph is called a b…
A. 24 Game Time Limit: 1 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/468/problem/A Description Little X used to play a card game called "24 Game", but recently he has found it too easy. So he invented a new game. Initially you ha…
B. School Marks Time Limit: 1 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/540/problem/B Description Little Vova studies programming in an elite school. Vova and his classmates are supposed to write n progress tests, for each test the…
链接: https://codeforces.com/contest/1265/problem/D 题意: An integer sequence is called beautiful if the difference between any two consecutive numbers is equal to 1. More formally, a sequence s1,s2,-,sn is beautiful if |si−si+1|=1 for all 1≤i≤n−1. Trans…
B. Mahmoud and Ehab and the bipartiteness time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Mahmoud and Ehab continue their adventures! As everybody in the evil land knows, Dr. Evil likes bi…
C. Median Smoothing A schoolboy named Vasya loves reading books on programming and mathematics. He has recently read an encyclopedia article that described the method of median smoothing (or median filter) and its many applications in science and e…
D2. Kirk and a Binary String (hard version) time limit per test1 second memory limit per test256 megabytes inputstandard input outputstandard output The only difference between easy and hard versions is the length of the string. You can hack this pro…
