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(共613篇)
C. Air Conditioner
链接:https://codeforces.com/contest/1304/problem/C Gildong owns a bulgogi restaurant. The restaurant has a lot of customers, so many of them like to ma...
2020-05-28
0
428
D 重排列
一个序列的重排列是指对这个序列中的元素进行若干次(包括0次)交换操作后得到的新序列 在本题中,序列中可能出现重复的数字,他们被视作不同的元素 例如,序列1 1的重排列有两种 现在有两个长度为 N 的非负整数序列 A 和 B,问有多少种 A 的重排列满足对于所有的 1≤i≤N,有Ai≤Bi 由...
2020-05-28
0
357
E 立方数
链接:https://ac.nowcoder.com/acm/contest/3007/E 对于给定的正整数 N,求最大的正整数 A,使得存在正整数 B,满足 A3B=N 输入包含 T 组数据,1≤T≤10,000;1≤N≤1018 输入描述: 第一行数字 T 表示数据组数 接下...
2020-05-28
0
667
B. Hyperset
链接:https://codeforces.com/contest/1287/problem/B Bees Alice and Alesya gave beekeeper Polina famous card game "Set" as a Christmas present....
2020-05-28
0
417
C. Cow and Message
链接:https://codeforces.ml/contest/1307/problem/C Bessie the cow has just intercepted a text that Farmer John sent to Burger Queen! However, Bessie is ...
2020-05-28
0
434
B. New Year and Ascent Sequence
链接:https://codeforces.com/contest/1284/problem/B A sequence a=[a1,a2,…,al]a=[a1,a2,…,al] of length ll has an ascent if there exists a pair of indices...
2020-05-28
0
492
C. New Year and Permutation
链接:https://codeforces.ml/contest/1284/problem/C Recall that the permutation is an array consisting of nn distinct integers from 11 to nn in arbitrary...
2020-05-28
0
644
浅谈欧拉函数
写这个类型博客的目的就是想总结一下某个专题的知识点,方便以后比赛前复习,由于太菜,如有错误,还请斧正。 首先我们要区别欧拉函数和欧拉定理 欧拉定理简单来说是用于求逆元的,当然也可用于降幂运算(若a,n互质 a^k ≡ a^(k mod φ(n)) (mod n) ) 至于扩展欧拉定理就不在这讲...
2020-05-28
0
380
C. Basketball Exercise
链接:https://codeforces.com/contest/1195/problem/C Finally, a basketball court has been opened in SIS, so Demid has decided to hold a basketball exerci...
2020-05-28
0
435
C2. Exam in BerSU (hard version)
链接:https://codeforces.ml/contest/1185/problem/C2 The only difference between easy and hard versions is constraints. If you write a solution in Pytho...
2020-05-28
0
354
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