→ Filter Problems Difficulty: — Add tag Main acmsguru | Problems Submit Status Standings Custom testProblems #Name 2110F Faculty math x287 2110E Melody dfs and similar, graphs x657 2110D Fewer Batteries binary search, dfs and similar, dp, graphs, greedy ...
Hello codeforces i was having a discussion with my friendAhmad_Hajjouzabout the codeforces problems and how they are rated so i want to ask you guys is the difference in difficulity between 800 and 900 rated problems the same as the difficulity difference between 1700 and 1800 thank you <3...
Recently, Pari and Arya did some research about NP-Hard problems and they found theminimum vertex coverproblem very interesting. Suppose the graphGis given. SubsetAof its vertices is called avertex coverof this graph, if for each edgeuvthere is at least one endpoint of it in this set, i....
如何选择题目 How to Choose Problems 这一阶段主要目标是提高对问题的观察能力。做构造题可以针对性地训练这一点。 选择难度在自己 rating 到 rating+200 范围内的构造题 (tag: constructive algorithms),按照过题人数降序做题,比如 [1700,1900] 区间的就是下面这个链接: ...
原题指路: codeforces.com/problems 题意(2 ) 称平面上三个点 p,q,r 构成坏三元组, 如果 d(p,r)=d(p,q)+d(q,r) , 其中 d(p,q) 表示点 p 与点q 的Manhattan距离. 称整数序列 b=[b1,⋯,bm] 是好的, 如果 ∄ 相异的 i,j,k∈[1,n] s.t. 点(bi,i),(bj,j),(bk,k) 构成...
Coming up with a new problem isn't as easy as many people think. Sometimes it is hard enough to name it. We'll consider a titleoriginalif it doesn't occur as a substring in any titles of recent Codeforces problems. You've got the titles ofnlast problems — the strings, consisting of...
原题指路:codeforces.com/problems 题意 给定三个整数n,a,b\ \ (1\leq a,b,n\leq 1\mathrm{e}7),求一个非负整数对(x,y)\ s.t.\ ax+by=n.若有解,输出"YES",并输出任一组解;否则输出"NO". 思路 暴力即可. 代码 void solve() { int n, a, b; cin >> n >> a >> b; for (int...
Are there any websites or tools one can use in getting reliable rating for codeforces problems? You should remember that the rating assigned to problems is estimated from an aggregate statistic, and not individual submissions — individual contributions to the difficulty estimate become less important...
We decided to create a better measure of problem difficulty, which we’ll call “problem rating”. Problem rating is an integral value, with higher problem ratings reflecting harder problems. In order for the rating to be meaningful, we made it mathematically compatible with user ratings. Technic...
如何选择题目 How to Choose Problems 这一阶段主要目标是提高对问题的观察能力。做构造题可以针对性地训练这一点。 选择难度在自己 rating 到 rating+200 范围内的构造题 (tag: constructive algorithms),按照过题人数降序做题,比如 [1700,1900] 区间的就是下面这个链接: ...