地址:http://codeforces.com/contest/832/problem/C 题目: C. Strange Radiation time limit per test 3 seconds memory limit per test 256 megabytes input standard input output standard output n people are standing on a coordinate axis in points with positive i…

 A. Strange Partition 题意:就是求最小和最大的bi/x向上取整的和. 思路:见题解:https://blog.csdn.net/qq_45900709/article/details/112341661 当时没想到的:就是不是说能够代替,不应该是平均以后再向上取整吗,尤其是等式的后一部分 代码: 1 #include<iostream> 2 #include<algorithm> 3 #include<cstring> 4 #include<…

题意:给你一组数,问你最少删去多少数,使得剩下的数,每个数都能整除数组中其它某个数或被数组中其它某个数整除. 题解:我们直接枚举所有因子,\(dp[i]\)表示\(i\)在数组中所含的最大因子数(当我们枚举到\(i\)时),然后用\(dp[i]\)更新以\(i\)作为因子的更大的数,注意,更新的时候\(dp[j]=max(dp[i],dp[j])\),而不是\(dp[j]+=dp[i]\),因为这样会把之前的因子重复计算. 代码: #include <bits/stdc++.h> #defin…

Codeforces Round #373 (Div. 1) A. Efim and Strange Grade 题意 给一个长为\(n(n \le 2 \times 10^5)\)的小数,每次可以选择某位小数进行四舍五入,最多做\(t(t \le 10^9)\)次. 求最大的数. 思路 每次必然找小数部分能进行四舍五入的最高位,并且四舍五入的位置是递增的. 注意:99.5这样的数据,最高位会进位. 代码 A. Efim and Strange Grade C. Sasha and Array…

Codeforces Round #366 (Div. 2) A I hate that I love that I hate it水题 #I hate that I love that I hate it n = int(raw_input()) s = "" a = ["I hate that ","I love that ", "I hate it","I love it"] for i in ran…

Codeforces Round #354 (Div. 2) Problems     # Name     A Nicholas and Permutation standard input/output 1 s, 256 MB    x3384 B Pyramid of Glasses standard input/output 1 s, 256 MB    x1462 C Vasya and String standard input/output 1 s, 256 MB    x1393…

直达–>Codeforces Round #368 (Div. 2) A Brain’s Photos 给你一个NxM的矩阵,一个字母代表一种颜色,如果有”C”,”M”,”Y”三种中任意一种就输出”#Color”,如果只有”G”,”B”,”W”就输出”#Black&White”. #include <cstdio> #include <cstring> using namespace std; const int maxn = 200; const int INF =…

 cf之路,1,Codeforces Round #345 (Div. 2) ps:昨天第一次参加cf比赛,比赛之前为了熟悉下cf比赛题目的难度.所以做了round#345连试试水的深浅.....       其实这个应该是昨天就写完的,不过没时间了,就留到了今天.. 地址:http://codeforces.com/contest/651/problem/A A. Joysticks time limit per test 1 second memory limit per test 256…

Codeforces Round #279 (Div. 2) 做得我都变绿了! Problems     # Name     A Team Olympiad standard input/output 1 s, 256 MB  x2377 B Queue standard input/output 2 s, 256 MB  x1250 C Hacking Cypher standard input/output 1 s, 256 MB  x740 D Chocolate standard in…

Codeforces Round #262 (Div. 2) 1003 C. Present time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Little beaver is a beginner programmer, so informatics is his favorite subject. Soon his info…