hdu 4043 FXTZ II [ 概率 + Java大数]】的更多相关文章

传送门 FXTZ II Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 530    Accepted Submission(s): 280 Problem Description Cirno is playing a fighting game called "FXTZ" with Sanae. Sanae is a ChuS…
FXTZ II Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 498    Accepted Submission(s): 266 Problem Description Cirno is playing a fighting game called "FXTZ" with Sanae.  Sanae is a ChuSho…
1. 题目描述有n个球,第i个球的伤害值为$2^i-1, i \in [1,n]$.有甲乙两个人,每次由甲选择n个球中的一个,用它以相同概率攻击自己或者乙,同时彻底消耗这个球.这样的攻击最多进行n次.一旦甲的伤害值高于乙,则甲输,否则甲胜.问甲胜的概率是多少. 2. 基本思路还是一步步推导.令dp[k]表示共有k个球时甲胜的概率.\begin{align}    dp[1] &= \frac{1}{2}    \notag \\    dp[2] &= \frac{1}{2} \times…
Problem Description The "Harry Potter and the Goblet of Fire" will be on show in the next few days. As a crazy fan of Harry Potter, you will go to the cinema and have the first sight, won’t you? Suppose the cinema only has one ticket-office and…
N! Time Limit: 10000/5000 MS (Java/Others)    Memory Limit: 262144/262144 K (Java/Others)Total Submission(s): 73503    Accepted Submission(s): 21308 Problem Description Given an integer N(0 ≤ N ≤ 10000), your task is to calculate N!   Input One N in…
代码:递归搜索一下.java大数做法 import java.util.*; import java.math.*; import java.security.MessageDigest; public class Main { static BigInteger s=BigInteger.ONE.add(BigInteger.ONE); public static void main(String[] args) { Scanner cin=new Scanner(System.in); in…
Cut the Cake Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 1102    Accepted Submission(s): 540 Problem Description MMM got a big big big cake, and invited all her M friends to eat the cake tog…
HDU 4911 Inversion 考点:归并排序 思路:这题呀比赛的时候忘了知道能够用归并排序算出逆序数,可是忘了归并排序的实质了.然后不会做-- 由于看到题上说是相邻的两个数才干交换的时候.感觉归并排序好像不是得要相邻的呀.然后就这样晕--刚才又一次看了才发现,归并就是相邻的交换的,正好是用来求逆序数的,唉--真的是做这个归并排序比赛就来了--真好! #include<iostream> #include<cstdio> #include<cstring> #in…
HDU 3567 Eight II(八数码 II) /65536 K (Java/Others)   Problem Description - 题目描述 Eight-puzzle, which is also called "Nine grids", comes from an old game. In this game, you are given a 3 by 3 board and 8 tiles. The tiles are numbered from 1 to 8 and…
介绍: java中用于操作大数的类主要有两个,一个是BigInteger,代表大整数类用于对大整数进行操作,另一个是BigDecimal,代表高精度类,用于对比较大或精度比较高的浮点型数据进行操作.因为这两种类的使用方法是一样的,所以下面我们以BigInteger为例进行讲解 基本用法: 1.新建一个值为123的大整数对象 BigInteger a=new BigInteger(“123”); //第一种,参数是字符串 BigInteger a=BigInteger.valueOf(123);…