随笔分类 - codeforces
摘要：D. Numbers on Tree 构造，树dfs 题目链接：https://codeforces.com/contest/1287/problem/D、 D. Numbers on Tree time limit per test 1 second memory limit per test 2
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摘要：关于 set/map 等容器对string类的 性能指标 测试题目： https://codeforces.com/contest/1287/problem/B 测试的字符串条件其中： 字符串长度为<=30, 字符串个数为<=1500， 且每一个加入和查询的字符串长度相等。 使用set/map 等容
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摘要："Educational Codeforces Round 80 (Rated for Div. 2)" A. Deadline 如果n =d 直接yes 否则对于公式 $x+ceil(d/(x+1)) include include include include include include
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摘要：Educational Codeforces Round 41 (Rated for Div. 2) E. Tufurama (CDQ分治 求 二维点数) time limit per test 2 seconds memory limit per test 256 megabytes input
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摘要：D. Pair Of Lines time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output You are given n points
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摘要："292D Connected Components" D. Connected Components time limit per test 2 seconds memory limit per test 256 megabytes input standard input output stan
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摘要："Educational Codeforces Round 63 (Rated for Div. 2)" D. Beautiful Array time limit per test 2 seconds memory limit per test 256 megabytes input standa
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摘要：C. Vasily the Bear and Sequence time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Vasily th
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摘要：Vasya and Beautiful Arrays "CodeForces 354C " Vasya's got a birthday coming up and his mom decided to give him an array of positive integers a of leng
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摘要："Codeforces Round 329 (Div. 2)" D. Happy Tree Party time limit per test 3 seconds memory limit per test 256 megabytes input standard input output stan
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摘要：G. Castle Defense time limit per test 1.5 seconds memory limit per test 256 megabytes input standard input output standard output Today you are going
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摘要："Educational Codeforces Round 40 (Rated for Div. 2)" C. Matrix Walk time limit per test 1 second memory limit per test 256 megabytes input standard in
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摘要：Coprime Arrays "CodeForces 915G " Let's call an array a of size n coprime iff gcd ( a 1, a 2, ..., a n ) = 1, where gcd is the greatest common divisor
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摘要：Make It Connected "CodeForces 1095F " You are given an undirected graph consisting of nn vertices. A number is written on each vertex; the number on v
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摘要：Physical Education Lessons "CodeForces 915E " This year Alex has finished school, and now he is a first year student of Berland State University. For
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摘要：Almost Acyclic Graph "CodeForces 915D " time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Y
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摘要：Educational Codeforces Round 37 (Rated for Div. 2)C. Swap Adjacent Elements time limit per test 1 second memory limit per test 256 megabytes input sta
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摘要：G. List Of Integers time limit per test 5 seconds memory limit per test 256 megabytes input standard input output standard output Let's denote as L (
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摘要：F. SUM and REPLACE time limit per test2 seconds memory limit per test256 megabytes inputstandard input outputstandard output Let D(x) be the number of
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摘要：Connected Components? "CodeForces 920E " You are given an undirected graph consisting of n vertices and edges. Instead of giving you the edges that ex
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