Chocolate Time Limit: 2 Seconds      Memory Limit: 65536 KB      Special Judge In 2100, ACM chocolate will be one of the favorite foods in the world."Green, orange, brown, red��", colorful sugar-coated shell maybe is the most attractive feature…

题目大意: 有c种不同的巧克力,每种无限个,意味着取出每种的几率每次为1/c.现在你需要取n次.然后将统计每种取出来的巧克力的数量.若为偶数则舍去,否则留下一个.问最后留下m个的概率是多少. 题目分析: 由于取出每种巧克力的概率始终相同,.不妨假设取出奇数个的巧克力正好是1~m,m+1则取出偶数次,然后求出这种情况的次数.最后答案乘以C(c,m)再除以c^n即可.由于可以取出相同的巧克力,所以采用指数型生成函数. 对于前m种,构造g(x)=x/1!+x^3/3!+x^5/5!.....=sinh…

Big Chocolate 题目链接:http://acm.hust.edu.cn/vjudge/problem/visitOriginUrl.action?id=19127 Big Chocolate Mohammad has recently visited Switzerland . As he loves his friends very much, he decided to buy some chocolate for them, but as this fine chocolate…

Dividing a Chocolate zoj 2705 递推,找规律的题目: 具体思路见:http://blog.csdn.net/u010770930/article/details/9769333 #include <stdio.h> #include <iostream> using namespace std; ]; int main() { int i,j,maxx; long long m,n; a[]=; a[]=; while(~scanf("%lld…

多校综合排名前25名的学校请发送邮件到HDUACM@QQ.COM,告知转账信息(支付宝或者卡号) Divide Chocolate Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 1757    Accepted Submission(s): 827 Problem Description It is well known that cl…

B. Chocolate 题目连接: http://www.codeforces.com/contest/617/problem/D Descriptionww.co Bob loves everything sweet. His favorite chocolate bar consists of pieces, each piece may contain a nut. Bob wants to break the bar of chocolate into multiple pieces…

C. Case of Chocolate Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/555/problem/C Description Andrewid the Android is a galaxy-known detective. Now he does not investigate any case and is eating chocolate out of boredom. A…

题目链接: C. Joty and Chocolate time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Little Joty has got a task to do. She has a line of n tiles indexed from 1 to n. She has to paint them in a stran…

Mike and Chocolate Thieves 题目链接: http://acm.hust.edu.cn/vjudge/contest/121333#problem/G Description Bad news came to Mike's village, some thieves stole a bunch of chocolates from the local factory! Horrible! Aside from loving sweet things, thieves fr…

E. Chocolate Bar Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/598/problem/E Description You have a rectangular chocolate bar consisting of n × m single squares. You want to eat exactly k squares, so you may need to break…