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codeforces Round #610 E - The Cake Is a Lie

codeforces Round #610 E - The Cake Is a Lie 题目： https://codeforces.com/contest/1282/problem/E We are committed to the well being of all participant...

2020-11-21

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CF Round #620 E [1-Trees and Queries]

CF Round #620 E 1-Trees and Queries 题意：给你一颗树，进行 q q q次查询，每次查询时在树上加一条边，然后问此时两点间的距离能否为一个特定的值 k k k，（能反复经过同一个节点或同一条边）。基本思路：加了一条边连接了x，y以后，a，b两点间的距离就...

2020-11-21

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Codeforces D. Prefix-Suffix Palindrome

Codeforces D. Prefix-Suffix Palindrome 题解：和D1相同，区别是找中间的回文串要压缩时间，用到了马拉车算法。（算法介绍在下面： #include<bits/stdc++.h> using namespace std; #define ll l...

2020-11-21

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第十一届蓝桥杯省赛C/C++B组题解

试题 A: 跑步训练本题总分：5 分题目【问题描述】小明要做一个跑步训练。初始时，小明充满体力，体力值计为$ 10000$。如果小明跑步，每分钟损耗 $600 $的体力。如果小明休息，每分钟增加 300 300 300的体力。体力的损耗和增加都是均匀变化的。小明打算跑一分钟、...

2020-11-21

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codeforces Round680 C. Division 题解

codeforces Round680 C. Division 题解题目 Oleg’s favorite subjects are History and Math, and his favorite branch of mathematics is division. To improve...

2020-11-21

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