链接: https://codeforces.com/contest/1215/problem/A 题意: The final match of the Berland Football Cup has been held recently. The referee has shown n yellow cards throughout the match. At the beginning of the match there were a1 players in the first team…

F. Video Cards time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Little Vlad is fond of popular computer game Bota-2. Recently, the developers announced the new add-on named Bota-3. Of course…

http://codeforces.com/contest/731/problem/F 注意到一个事实,如果你要找一段区间中(从小到大的),有多少个数是能整除左端点L的,就是[L, R]这样.那么,很明显,把这个区间分段.分成[L, 2 * L - 1],因为这段区间中,都不大于等于L的两倍,这样就使得这段区间的贡献就是sum_number * L了. 就是中间有多少个数,每个数贡献一个L值.然后到枚举[2 * L, 3 * L - 1]这段区间,贡献的值就是sum_number * (2 *…

---恢复内容开始--- output standard output The final match of the Berland Football Cup has been held recently. The referee has shown n yellow cards throughout the match. At the beginning of the match there were a_1 players in the first team and a_2 players…

https://www.cnblogs.com/31415926535x/p/11553164.html 感觉很硬核啊这场,,越往后越做不动,,,emmmm,,,(这场是奔着最后一题 2sat 来的,,,上次学这玩意是在今年的3.4月份把,,,早忘得差不多了,,, A. Yellow Cards A题较简单,,贪心就行了,, #include <bits/stdc++.h> #define aaa cout<<233<<endl; #define endl '\n' u…

前言 2019.9.16 昨天下午就看了看D题,没有写对,因为要补作业,快点下机了,这周争取把题补完. 2019.9.17 这篇文章或者其他文章难免有错别字不被察觉,请读者还是要根据意思来读,不要纠结qwq. 2019.9.18 \(n<=2*10^5\) 是 \(O(n)\) 或 \(O(nlogn)\) 的算法,知道这招以后就不会乱想方法了. A Yellow Cards 洛谷CF1215A 开始我还没有想到什么好办法,太丢人了. Sooke大佬给出了一个这样的方法: 对于\(Min\),我…

CF1215A. Yellow Cards简单的模拟,给定了黄票张数,判断最少和最多有多少人被罚下场. #include <bits/stdc++.h> using namespace std; int main() { int a,b,aa,bb,n,nnn; cin>>a>>b>>aa>>bb>>n; nnn=n; )*a+(bb-)*b; ; if(aa<=bb) { if(n>=aa*a) { tt+=a; n-=…

题目链接:http://codeforces.com/contest/731/problem/F F. Video Cards time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Little Vlad is fond of popular computer game Bota-2. Recently, the developers…

题目链接:http://codeforces.com/contest/731/problem/F 题意:有n个数,从里面选出来一个作为第一个,然后剩下的数要满足是这个数的倍数,如果不是,只能减小为他的倍数,否则就舍弃掉,然后把没有舍弃的数的值加起来,求和的最大值; 43 2 15 9 就拿这个来说,当拿3当做第一个数时结果是3+15+9=27因为2不是3的倍数:当拿2作为第一个数时,结果是2+2+14+8=26因为3,15,9都不是2的倍数,所以只能减小;同理...求最大的和; 我们可以记录每个…

链接: https://codeforces.com/contest/1215/problem/D 题意: Monocarp and Bicarp live in Berland, where every bus ticket consists of n digits (n is an even number). During the evening walk Monocarp and Bicarp found a ticket where some of the digits have bee…