题解

CF2086E Zebra-like Numbers 题解

CF2066E Tropical Season 题解

LOJ6077 「2017 山东一轮集训 Day7」逆序对

QOJ9904 最小生成树 题解

[ARC068E] Snuke Line 解题报告

区间涂色三问

Codeforces Round 893 (Div. 2) A–E2

Codeforces Round 892 (Div. 2) A–D

AtCoder Beginner Contest 314 A–G

Codeforces Round 891 (Div. 3) A–G

Codeforces Round 890 (Div. 2) A–E1

AtCoder Beginner Contest 313 A–F

AtCoder Beginner Contest 312 A–F

Codeforces Round 889 (Div. 2) A–D

Codeforces Round 888 (Div. 3) A–G

Codeforces Round 887 (Div. 2) A–D

AtCoder Beginner Contest 311 A–F

Codeforces Round 886 (Div. 4) A–H

Codeforces Round 885 (Div. 2) A–E

AtCoder Beginner Contest 310 A–F

Codeforces Round 884 (Div. 1 + Div. 2) A–E

Codeforces Round 883 (Div. 3) A–G

Codeforces Round 882 (Div. 2) A–D

AtCoder Beginner Contest 308

蓝书 1.1 问题求解策略 习题题解

AtCoder Beginner Contest 306

Codeforces Round 878 (Div. 3)

Codeforces Round 876 (Div. 2)

DP 30题（下）

DP 30题（中）

DP 30题（上）

NOIP2022 T3 建造军营

IOI2022 D2T1 数字电路