03 2023 档案

离散数学——图论
摘要：设 A,B 为任意的两个集合, 称 a,b∣a∈A∧b∈B 为 A 与 B 的无序积,记作 A & B. 为方便起见, 将无序积中的无序对 a,b, 记为 (a,b), 并且允许 a=b. 需要指出的 阅读全文
posted @ 2023-03-13 20:17 OopsOops 阅读(407) 评论(0) 推荐(0) 编辑
CF1787C - Remove the Bracket
摘要：https://codeforces.com/problemset/problem/1787/C This is the reason why the problem was named as Remove the Bracket. \begin{aligned} \text{Product} &= 阅读全文
posted @ 2023-03-06 12:54 OopsOops 阅读(40) 评论(0) 推荐(0) 编辑
CF1741E - Sending a Sequence Over the Network
摘要：https://codeforces.com/contest/1741/problem/E Let's introduce the dynamics. dp[i]=true if on the prefix ii the answer is Yes. Then i 阅读全文
posted @ 2023-03-06 11:50 OopsOops 阅读(16) 评论(0) 推荐(0) 编辑
 

 
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