• codeforces 359D 二分答案+RMQ

    时间:2024-03-21 21:54:47

    上学期刷过裸的RMQ模板题,不过那时候一直不理解>_<其实RMQ很简单:设f[i][j]表示从i开始的,长度为2^j的一段元素中的最小值or最大值那么f[i][j]=min/max{d[i][j-1], d[i+2^j-1][j-1]}RMQ的ST算法: void ST() ...

  • Codeforces Round 935 (Div. 3)(A,B,C,D,E,F)

    时间:2024-03-20 21:13:25

    比赛链接 阳间场,阴间题,最考阅读理解的一场。题目本身的难度不大。 A. Setting up Camp 题意: 组委会计划在奥运会结束后带领参赛者进行一次徒步旅行。目前,需要携带的帐篷数量正在计算中。据了解,每个帐篷最多可容纳 ...

  • 解决codeforces访问慢的问题

    时间:2024-03-01 13:05:06

    转载至:http://blog.csdn.net/wmx16835/article/details/38639451 前阵子打Codeforces(以下简...

  • Codeforces Round 925 (Div. 3)

    时间:2024-02-16 11:46:11

    比赛地址 Dashboard - Codeforces Round 925 (Div. 3) - Codeforces A. Recovering a Small String 直接模拟 #include<bits/stdc++.h>#define IOS ios::sync_with_...

  • Codeforces 1340B Nastya and Scoreboard(dp,贪心)

    时间:2024-01-26 20:26:32

    题目链接OvO题目大意  给你\(n\)串数字,\(1\)代表该位置是亮的,\(0\)代表是灭的。你必须修改\(k\)个数字,使某些\(0\)变为\(1\)...

  • Codeforces Round #505 (rated, Div. 1 + Div. 2, based on VK Cup 2018 Final) B. Weakened Common Divis

    时间:2024-01-22 09:17:45

    题目链接让你找一个数,使得这个数,可以被每个二元组的两个数中的一个数整除。先将第一个二元组的两个数质因数分解一下,分解的质数加入set中,然后,对剩下的n-1个二元组进行遍历,每次遍历到的二元组对s中的质数进行判断是否能整除。如果某个质数可以被n-1个二元组整除(两个数中的一个)。好浅显的思路,,,...

  • Codeforces Round #371 (Div. 2) C. Sonya and Queries

    时间:2024-01-21 19:15:48

    题目链接分析:01trie树,很容易就看出来了,也没什么好说的。WA了一发是因为没有看见如果数字位数大于01序列的时候01序列也要补全0。我没有晚上爬起来打,白天发现过的人极多。/*****************************************************///#pra...

  • Codeforces Round #371 (Div. 2)E. Sonya and Problem Wihtout a Legend[DP 离散化 LIS相关]

    时间:2024-01-21 19:07:27

    E. Sonya and Problem Wihtout a Legendtime limit per test5 secondsmemory limit per test256 megabytesinputstandard inputoutputstandard outputSonya was u...

  • Codeforces Round #371 (Div. 2) C. Sonya and Queries[Map|二进制]

    时间:2024-01-21 19:01:44

    C. Sonya and Queriestime limit per test1 secondmemory limit per test256 megabytesinputstandard inputoutputstandard outputToday Sonya learned about lon...

  • 【CodeForces】713 C. Sonya and Problem Wihtout a Legend

    时间:2024-01-21 19:00:42

    【题目】C. Sonya and Problem Wihtout a Legend【题意】给定n个数字,每次操作可以对一个数字±1,求最少操作次数使数列递增。n<=10^5。【算法】动态规划+前缀和优化【题解】★令b[i]=a[i]-i,则a[i]递增等价于b[i]不递减。这样做之后,显然数字...

  • Codeforces Round #371 (Div. 2) C. Sonya and Queries —— 二进制压缩

    时间:2024-01-21 18:49:36

    题目链接:http://codeforces.com/contest/714/problem/CC. Sonya and Queriestime limit per test1 secondmemory limit per test256 megabytesinputstandard inputou...

  • Codeforces Round #371 (Div. 1)

    时间:2024-01-21 18:47:25

    A:题目大意:在一个multiset中要求支持3种操作:1.增加一个数2.删去一个数3.给出一个01序列,问multiset中有多少这样的数,把它的十进制表示中的奇数改成1,偶数改成0后和给出的01序列相等(比较时如果长度不等各自用0补齐)题解:1.我的做法是用Trie数来存储,先将所有数用0补齐成...

  • Educational Codeforces Round 16 B

    时间:2024-01-21 17:26:32

    DescriptionYou are given n points on a line with their coordinates xi. Find the point x so the sum of distances to the given points is minimal.InputTh...

  • Educational Codeforces Round 16

    时间:2024-01-21 17:26:36

    A. King Moveswater。= =。 #include <cstdio> ,,,,,-,-,-}; ,-,,,-,,,-,}; #define judge(x,y) x >= 1 && x <= 8 && y >= 1 &...

  • Educational Codeforces Round 7 D. Optimal Number Permutation 构造题

    时间:2024-01-21 17:20:21

    D. Optimal Number Permutation题目连接:http://www.codeforces.com/contest/622/problem/DDescriptionYou have array a that contains all integers from 1 to n tw...

  • Educational Codeforces Round 37 E. Connected Components?(图论)

    时间:2024-01-21 17:19:12

    E. Connected Components?time limit per test2 secondsmemory limit per test256 megabytesinputstandard inputoutputstandard outputYou are given an undirec...

  • Educational Codeforces Round 37 (Rated for Div. 2)C. Swap Adjacent Elements (思维,前缀和)

    时间:2024-01-21 17:19:50

    Educational Codeforces Round 37 (Rated for Div. 2)C. Swap Adjacent Elementstime limit per test1 secondmemory limit per test256 megabytesinputstandard ...

  • Educational Codeforces Round 43 (Rated for Div. 2) ABCDE

    时间:2024-01-21 17:17:17

    A. Minimum Binary Numbertime limit per test1 secondmemory limit per test256 megabytesinputstandard inputoutputstandard outputString can be called corr...

  • Educational Codeforces Round 37 G. List Of Integers (二分,容斥定律,数论)

    时间:2024-01-21 17:16:17

    G. List Of Integerstime limit per test5 secondsmemory limit per test256 megabytesinputstandard inputoutputstandard outputLet's denote as L(x, p) an in...

  • Educational Codeforces Round 37 A B C D E F

    时间:2024-01-21 17:10:25

    A. water the gardenCode#include <bits/stdc++.h>#define maxn 210using namespace std;typedef long long LL;int n, k;int x[maxn];void work() { sc...