目录 Codeforces 990 A.Commentary Boxes B.Micro-World C.Bracket Sequences Concatenation Problem D.Graph And Its Complement(思路 构造) E.Post Lamps(贪心) F.Flow Control(思路) G.GCD Counting(思路) C...
2023-07-11编程代码Codeforces,div,Educational目录 Codeforces 1000 A.Codehorses T-shirts B.Light It Up C.Covered Points Count(差分) D.Yet Another Problem On a Subsequence(DP) E.We Need More Bosses(圆方树) $Description$ $Solution$ F.One Occurr...
2023-07-11编程代码Codeforces,div,Educational目录 Codeforces 1009 A.Game Shopping B.Minimum Ternary String C.Annoying Present D.Relatively Prime Graph E.Intercity Travelling(递推) $Description$ $Solution$ F.Dominant Indices(启发式合并) G.All...
2023-07-11编程代码Codeforces,div,EducationalC. Replace To Make Regular Bracket Sequence 题目连接: http://www.codeforces.com/contest/612/problem/C Description You are given string s consists of opening and closing brackets of four kinds <...
2023-05-24编程教程Codeforces,Educational,replace因为是unrated于是就叫划水记了,而且本场也就用了1h左右。 A、B:划水去了,没做 C:大水题,根据初三课本中圆的知识,可以把角度化成弧长,而这是正多边形,所以又可以化成边数,于是假设读入为a,就是周长的a/...
2023-05-04编程教程CF,Educational,划水Educational Codeforces Round 1 A. Tricky Sum 数学,求\(1 \dots n\)的和减去 小于等于n的二次幂乘2之和 LL f[40]; void solve() { LL n; cin>>n; LL ans=n+n*(n-1)/2; for(int i=0;i<=32;i++) i...
2023-03-12编程教程Codeforces,EducationalEducational Codeforces Round 3 A. USB Flash Drives 降序排序后,贪心,甚至不会爆longlong void solve() { int n,m; cin>>n>>m; vector<int> a(n); for(int i=0;i<n;i++...
2023-03-07编程教程Codeforces,EducationalEducational Codeforces Round 35 (Rated for Div. 2) https://codeforces.com/contest/911 A 模拟 #include<bits/stdc++.h> using namespace std; #define lson l,mid,rt<<1 #define rson mid+1...
2023-02-18编程教程Codeforces,div,Educational,RatedEducational Codeforces Round 43 (Rated for Div. 2) https://codeforces.com/contest/976 A #include<bits/stdc++.h> using namespace std; #define lson l,mid,rt<<1 #define rson mid+1,r,rt...
2023-02-18编程教程Codeforces,div,Educational,RatedProblem Educational Codeforces Round 60 (Rated for Div. 2) - C. Magic Ship Time Limit: 2000 mSec Problem Description Input Output The only line should contain the minimal number ...
2023-02-18编程教程Codeforces,Educational,Magic,Rated,ShipEducational Codeforces Round 60 (Rated for Div. 2) 题目链接:https://codeforces.com/contest/1117 A. Best Subsegment 题意: 给出n个数,选取一段区间[l,r],满足(al+...+ar)/(r-l+1)最大,这里l<=r,并...
2023-02-18编程教程Codeforces,div,Educational,Rated,题解Educational Codeforces Round 48 (Rated for Div. 2) C. Vasya And The Mushrooms 题目链接:https://codeforces.com/contest/1016/problem/C 题意: emmm,说不清楚,还是直接看题目吧。 题解: 这个题人...
2023-02-18编程教程CD,Codeforces,Educational,Rated,题解Educational Codeforces Round 39 (Rated for Div. 2) G 题意: 给一个序列\(a_i(1 <= a_i <= 10^{9}),2 <= n <= 200000\), 如果至多删除其中的一个数之后该序列为严格上升序列,那么称原序列为几乎...
2023-02-18编程教程Codeforces,div,Educational,RatedEducational Codeforces Round 63 (Rated for Div. 2)题解 题目链接 A. Reverse a Substring 给出一个字符串,现在可以对这个字符串进行一次翻转,问是否存在一种方案,可以使得翻转后字符串的字典序可以变小。 ...
2023-02-18编程教程Codeforces,div,Educational,Rated,题解Codeforces Educational Codeforces Round 44 (Rated for Div. 2) E. Pencils and Boxes 题目连接: http://codeforces.com/contest/985/problem/E Description Mishka received a gift of multicolored pencils ...
2023-02-18编程教程Boxes,Codeforces,Educational,Pencils,RatedCodeforces Educational Codeforces Round 44 (Rated for Div. 2) F. Isomorphic Strings 题目连接: http://codeforces.com/contest/985/problem/F Description You are given a string s of length n consistin...
2023-02-18编程教程Codeforces,Educational,Isomorphic,Rated,stringsEducational Codeforces Round 64 (Rated for Div. 2)题解 题目链接 A. Inscribed Figures 水题,但是坑了很多人。需要注意以下就是正方形、圆以及三角形的情况,它们在上面的顶点是重合的。 其余的参照样例判断...
2023-01-04站长百科Codeforces,div,Educational,Rated,题解Educational Codeforces Round 65 (Rated for Div. 2)题解 题目链接 A. Telephone Number 水题,代码如下: Code #include <bits/stdc++.h> using namespace std; typedef long long ll; const int N = 2e...
2023-01-04站长百科Codeforces,div,Educational,Rated,题解CodeForces1633 Div. 7 解析: 题目大意 给定 \(t\) 组数据。每组数据给定一个数 \(n\)(\(10\le n\le 999\))。 每次操作可以修改 \(n\) 任意一位上的数,将这一位上的数修改为 \(0\sim 9\) 之间的任意数。要求...
2022-12-21站长百科Codeforces,div,Educational,Ratedhttps://codeforc.es/contest/1697/problem/C 因为规则中,两种字符串变换都与‘b’有关,所以我们根据b的位置来进行考虑; 先去掉所有的'b',如果两字符串不相等就“NO”; 否则通过‘b'在a,b串中的位置,如果posa>...
2022-12-15站长百科Codeforces,div,Educational,problem,Rated