Codeforces 分類

2019

04-16

Codeforces Round 551 D树上DP,E 简单二分

DP

04-01

CF 愚人节赛题目鉴赏

AprilFool

03-23

Codeforces Round 548 D(莫反), E(网络流)

莫比乌斯反演 Möbius function 网络流

03-09

Codeforces Round 546 E 线段树

03-09

Educational Codeforces Round 61 (Rated for Div. 2) E 数学题未知数表示法

数学

03-09

Codeforces Round 545 C,D(floyd判环)

floyd判环

02-03

Educational Codeforces Round 59 (Rated for Div. 2) E 看似n方，实则O(n)的三分dp

DP

01-08

Codeforces Round 530 B 数学题简单反证

2018

12-12

Codeforces Round 526 C (线段树+LCA+树的遍历->树上链状合并+MEX)

线段树 LCA mex

11-29

Educational Codeforces Round 55 E 简单三分(CF EDU 55E)

三分

07-14

Codeforces Round 497 B(容斥)

容斥

07-01

Codeforces Round 493 (Div. 1) 容斥(493D1C,497D1B)

容斥

05-11

Codeforces 980 D 离散化

离散化

2017

12-30

Good Bye 2017 D(math:series + extended Euclidean + dp)

DP 概率论

11-20

Codeforces Round 446 (Div. 1) C(MST + Disjoint Set)

图

0%