echozqn

echozqn:

博客地址:https://www.cnblogs.com/echozqn/

最新文章

F. Cards and Joy

D. Equalize the Remainders set的使用+思维

Gym 101170AArranging Hat dp

H. Subsequences (hard version) dp

query 线段树 + 区间排序

E. Sasha and Array 矩阵快速幂 + 线段树

E. XOR Guessing 交互题 Educational Codeforces Round 71 (Rated for Div. 2)

C. Helga Hufflepuff's Cup 树形dp 难

C. Four Segments 前缀后缀

B - Save the problem! CodeForces - 867B 构造题

2019-2020Nowcoder Girl初赛 题解

欧拉函数

E. Count The Blocks

网络流二十四题之魔术球问题

Codeforces Round #546 (Div. 2) C. Nastya Is Transposing Matrices

DP 魔族密码 LIS

cf 20190307 Codeforces Round #543 (Div. 2, based on Technocup 2019 Final Round)

种类并查集 食物链

C - 继续畅通工程 最小生成树

E - Intervals 贪心