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2021 Xinjiang Provincial Collegiate Programming Contest
G. cocktail with snake 题意:给区间宽高:n,m,蛇形走位,问k步之后和原点的曼哈顿距离是多少 分析 int t = k / n 就是走k步后当行数 如果 t 是奇数,说明在往左走 如果 t 是偶数,说明在往右走 k % n 就是当前层往左往右走的步数 讨论一下,算出结果就行了 //------------------------2022黑龙江省赛题解(The 17th Heilongjiang Provincial Collegiate Programming Contest)
A - Bookshelf Filling 题意: 有a,b两种高度的书,a < b,a有n本,b有m本,全部竖着摆放在高度为h的书架上,现在要把至多(m - 1)本b书横着摆放在一些书的顶部。 问这样摆放之后的最小宽度是多少。 题解: 最简单的方法就是二分。这道题显然具有单调性,因为假设一个答案x可行,我们在中间抽出一本I. Latitude Compressor 题解 - 2022 Hubei Provincial Collegiate Programming Contest
传送门 赛时基本对了,结果被我推的错误数值表 hack 了队友,并且由于对多项式的操作不熟,导致最后一步一直没想出来 【大意】 给定 \(n, m\) ,求集合 \(\left\{ q | \left(\begin{matrix}1&2&3&\cdots&n\\p_1&p_2&p_3&\cdots&p_n\end{matrix}\right) ^ m = \left(\begin{matrix}1&2&The 14th Jilin Provincial Collegiate Programming Contest
The 14th Jilin Provincial Collegiate Programming Contest 目录The 14th Jilin Provincial Collegiate Programming ContestProblem A. ChordProblem B. Problem Select题解代码Problem C. String Game题解代码Problem D. TrieProblem E. Shorten the Array题解代码Problem F. QThe 17th Zhejiang Provincial Collegiate Programming Contest
比赛链接: https://codeforces.com/gym/102770 A. AD 2020 题目大意: 输入两个日期(日期范围是从 20000101 到 99991231),判断这两个日期及它们中间有多少个日期包含 202 这个子串。 思路: 预处理出每一个日期是否包含 202,然后做一个前缀和,询问的时候直接输出就行。 代码: #include <bitsinsert ignore、insert和replace
创建测试表(有PrimaryKey,或者unique索引,如表id设置了自增时): CREATE TABLE citys( id INT(10) PRIMARY KEY AUTO_INCREMENT, city_name VARCHAR(255) UNIQUE, provincial VARCHAR(255) ); 插入测试数据 INSERT INTO citys(city_name,provincial) value('hangzh教材中遇到的问题---第六章
1.6.3节中为什么要用这么多排序? 如图: 如果去掉【排序记录】,那么会报以下错误: 2.过滤记录中特别容易忽略的一点? 这个NOT表示,如果 Provincial字段不为NULL时,发送true数据给步骤空操作。 如果Provincial字段为NULL时,发送false数据给步骤空操作22021 Hubei Provincial Collegiate Programming Contest
D. Fragmentation merging D. Fragmentation merging 题意:自己看 题解:对每一种情况进行判断,看是不是由最多两段组成就行了 AC代码 #include "bits/stdc++.h" using namespace std; #define ll long long const int maxn=5e3+10; const int inf=0x3f3f3f3f; inline int rd(){The 2019 ACM-ICPC China Shannxi Provincial Programming Contest
A - Tasks dp或者贪心 #define x first #define y second #define pb push_back #define ls rt << 1 #define rs rt << 1 | 1 typedef long long ll ; const double esp = 1e-6 , pi = acos(-1) ; typedef pair<int , int> PII ; const int N = 1e6 + 10 , INFThe 17th Zhejiang Provincial Contest E. Easy DP Problem(主席树)
题目描述 题目链接 题目大意 给你一个序列a[],以及q个查询。 对于每个查询,给出l,r,k,要求以a[l-r]作为b[]数组求出 dp[r-l+1][k]的值。 题目分析 通过分析题目给出的状态转移方程,我们可以发现: d pGym The 17th Zhejiang Provincial Collegiate Programming Contest E.Easy DP Problem(主席树)
const int N=1e5+5; int n,m,_; int i,j,k; int a[N]; struct Node { int l,r; int sz; ll sum; }t[N<<5]; int root[N],tot=0; vector<int> v; void update(int &x,int y,int l,int r,int poF. Fair Distribution——The 18th Zhejiang Provincial Collegiate Programming Contest
F. Fair Distribution time limit per test1 second memory limit per test512 megabytes inputstandard input outputstandard output There are n robots and m energy bars in the Dream Kingdom. DreamGrid, the king, is trying to make a fair distribution of the eneString Game---The 14th Jilin Provincial Collegiate Programming Contest
题意: clair的字符串中有几种子序列等于bob的字符串 思路: 自前向后遍历clair的字符串( i=1;i<=l1;i++) 自后向前遍历bob的字符串( j=l2;j>=1;j–) dp【j】代表clair前i个字符有dp【j】种子序列等于bob前j个字符 if(c[i]==b[j])dp[j]=(dp[j-1]+dp[j])%mod; ///c的第i位作为b的HZNU Training 26 for Zhejiang Provincial Competition 2020
A - A POJ - 1149 题意:m个猪圈,n个顾客,每个顾客有一些猪圈的钥匙,猪圈的猪可以相互交换,求最大卖出猪数。考虑猪圈的猪如果交换,实际上还是在顾客之间流动,所以以猪圈为单位建模并不合适,因此对于每一个猪圈,能访达所有的顾客都连一条边,因为猪圈的交换实际上还是在顾客之间流动,对于每HZNU Training 22 for Zhejiang Provincial Competition 2020
F - Instability 题意:一张图,求有多少个集合,包含三元环或者补三元环, 考虑 如下性质 Ramsey定理--世界上任意6个人中,总有3个人相互认识,或互相皆不认识。 当集合大小大于6时,发生了变化,一定满足,至少三个互不相连,或者互相连接, 记录一下6元以上的关系,算出组合数,然后暴力出 n = 5HZNU Training 10 for Zhejiang Provincial Competition 2020
A - A Count Task HDU - 6480 找出所有的区间只含一种字母。 注意long long #include<bits/stdc++.h> using namespace std; typedef long long ll; #define pb push_back const int N=1e6+5; int main(){ int t; scanf("%d",&t); while(t--){ stHZNU Training 5 for Zhejiang Provincial Competition 2020
Solved A B C D E F G H I J 5/11 AC AC AC AC AC ZOJ - 4104 - H 题意:给你一个序列,每次可以把一个元素移到最前面,问你移几次使得序列单增。 解法:偏思维, 做法比较多; 其实比较一下两个序列就好了; #include<bits/stdc++.h> using names2018-2019 ACM-ICPC, China Multi-Provincial Collegiate Programming Contest
宁夏邀请赛的题,网络赛出锅之后来补了一下,还蛮有意思。题目地址:https://codeforces.com/gym/102222 A、给你一个栈和一堆pop、push操作,每次操作之后询问栈中的最大值,如果栈为空输出0 输入是给定的一个随机数生成器 每一次有元素进栈就把他与当前最大值比较,更新最大值之后把最大值压[单调栈] 2018-2019 ACM-ICPC, China Multi-Provincial Collegiate Programming Contest-Maximum Element In A
题目:https://codeforces.com/gym/102222/problem/A Maximum Element In A Stack time limit per test10.0 s memory limit per test256 MB inputstandard input outputstandard output As an ACM-ICPC newbie, Aishah is learning data structures in computer science. SRolling The Polygon (2018-2019 ACM-ICPC, China Multi-Provincial Collegiate Programming Contest)(The
Bahiyyah has a convex polygon with nn vertices P0,P1,⋯,Pn−1P0,P1,⋯,Pn−1 in the counterclockwise order. Two vertices with consecutive indexes are adjacent, and besides, P0P0 and Pn−1Pn−1 are adjacent. She also assigns a point QQ inside the pol计蒜客 39272.Tree-树链剖分(点权)+带修改区间异或和 (The 2019 ACM-ICPC China Shannxi Provincial Programming ContestE.)
Tree Ming and Hong are playing a simple game called nim game. They have nn piles of stones numbered 11 to nn ,the ii-th pile of stones has a_iai stones. There are n - 1n−1 bidirectional roads in total. For any two piles, there is a unique patThe 2019 ACM-ICPC China Shannxi Provincial Programming Contest B. Product(杜教筛+约数)
题意 给你n(n≤109)n(n\leq 10^9)n(n≤109),m(m≤2×109)m(m\leq 2\times10^9)m(m≤2×109),p(p≤2×109)p(p\leq 2\times10^9 )p(p≤2×109),ppp为质数求 ∏i=1n∏j=1n∏k=1nmgcd(i,j)[k∣gcd(i,j)]\prod_{i=1}^n\prod_{j=1}^n\prod_{k=1}^nm^{gcd(i,j)[k|gcd(i,j)]}i=1∏nB.Grid with Arrows-The 2019 ICPC China Shaanxi Provincial Programming Contest
BaoBao has just found a grid with $n$ rows and $m$ columns in his left pocket, where the cell in the $j$-th column of the $i$-th row (indicated by $(i, j)$) contains an arrow (pointing either upwards, downwards, leftwards or rightwards) and an integer $a_The 16th Zhejiang Provincial Collegiate Programming Contest Sponsored(E F G H I)
http://acm.zju.edu.cn/onlinejudge/showContestProblems.do?contestId=392 E:Sequence in the Pocket 思路:从后往前判断在不在应该在的位置,如果不在则需要放到最前面,通过cnt控制当前的数 比较 排好序的数组的数。 code: #include<bits/stdc++.h> using namespace std;#define LLHZNU Training 2 for Zhejiang Provincial Collegiate Programming Contest 2019
赛后总结: T:今天下午参加了答辩比赛,没有给予队友很大的帮助。远程做题的时候发现队友在H上遇到了挫折,然后我就和她们说我看H吧,她们就开始做了另外两道题。今天一人一道题。最后我们在研究一道dp的时候,被疯狂卡时间和内存,也是最后三十分钟开始写的,感觉受到了挫折。┭┮﹏┭┮