The 2015 ACM-ICPC China Shanghai Metropolitan Programming Contest 2015ACM-ICPC上海大都会赛 签到题 #include<cstdio> #include<cstring> #include<cmath> #include<algorithm> using namespace std; +; struct Exam { int r,e,l; int Start,End; }E[maxn…

Exam Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 1944    Accepted Submission(s): 948 Problem Description As this term is going to end, DRD needs to prepare for his final exams. DRD has n exa…

原题转化为求a*b*c <=n中选出两个数组成有序对<a,b>的选法数. 令a<=b<=c.... 分情况讨论: (1)全部相等,即a = b = c. 选法有n^(1/3). (2)有两个相等,则设相等的值为i,枚举i = 1到i*i <= n ,剩下的一个数的最大值为t = n/(i*i).当t >=i时,t = i这一种要删除,因为t = i则三个数都相等了,这种选法有3种,所以ans += 3*(t-1).t<i就ans += 3*t; (3)三个数…

思路: 将条件转化为满足abc<=n的abc的数目. 1.3个数相等时,为 A; 2.有2个数相等时,为 B; 3.都不相等时,为 C. 则结果为A+3*B+6*C. 代码如下: #include<iostream> #include<stdio.h> #include<algorithm> #include<iomanip> #include<cmath> #include<cstring> #include<vecto…

2019 杭电多校 7 1006 题目链接:HDU 6651 比赛链接:2019 Multi-University Training Contest 7 Problem Description Final Exam is coming! Cuber QQ has now one night to prepare for tomorrow's exam. The exam will be a exam of problems sharing altogether \(m\) points. Cub…

hdu题面 Time limit 2000 ms Memory limit 524288 kB OS Windows 吐槽 比赛时候晕死了-- 解题思路 先留坑 公式法 https://blog.csdn.net/qq_43316231/article/details/99320860 https://blog.csdn.net/weixin_44327262/article/details/99326110 https://blog.csdn.net/toohandsomeieaseid/ar…

题意: 有n道题,这n道题共m分,要求你至少做出k道才能及格,你可以自由安排复习时间,但是只有某道题复习时间严格大于题目分配的分值时这道题才能够被做出来,求最少的,能够保证及格的复习时间.复习时间和分数都是整数. 题解: 为什么给这道题一个博弈的标签呢?因为这道题其实是这样一个博弈过程: 第一回合,玩家A给自己的n个题分配复习时间 第二回合,玩家B拿到m个分数,去给题目分配分数,卡A的复习成果,只要分数和复习时间完全一样就相当于卡掉了,至少卡掉n-k+1个题B就获胜 明白了吧,学生对于题目分数分…

Physical Examination Time Limit:1000MS     Memory Limit:32768KB     64bit IO Format:%I64d & %I64u Submit Status Practice HDU 4442 Description WANGPENG is a freshman. He is requested to have a physical examination when entering the university. Now WAN…

链接:http://acm.hdu.edu.cn/showproblem.php?pid=1086 You can Solve a Geometry Problem too Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 7167    Accepted Submission(s): 3480 Problem Description Ma…

http://acm.hdu.edu.cn/showproblem.php?pid=1084 What Is Your Grade? Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 9580    Accepted Submission(s): 2940 Problem Description “Point, point, life of…