poj 3071 Football (概率DP水题)

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poj 3071 Football (概率DP水题)

G - Football Time Limit:1000MS Memory Limit:65536KB 64bit IO Format:%I64d & %I64u Submit Status Description Consider a single-elimination football tournament involving 2n teams, denoted 1, 2, …, 2n. In each round of the tournament, all teams…

POJ 3071 Football(概率DP)

题目链接不1Y都对不住看过那么多年的球.dp[i][j]表示i队进入第j轮的概率,此题用0-1<<n表示非常方便. #include <cstdio> #include <cstring> #include <iostream> #include <cmath> #include <algorithm> using namespace std; ][]; ][]; int main() { int n,i,j,mod,c,k,ans…

Codeforces 148D 一袋老鼠 Bag of mice | 概率DP 水题

除非特别忙,我接下来会尽可能翻译我做的每道CF题的题面! Codeforces 148D 一袋老鼠 Bag of mice | 概率DP 水题题面胡小兔和司公子都认为对方是垃圾. 为了决出谁才是垃圾,大哥拿来了一袋老鼠,其中有w只白老鼠和b只黑老鼠.胡小兔先抓,先抓到白老鼠的人赢. 每次学姐抓完老鼠之后,总会有另外一只老鼠从袋子里自己跑出来(这只老鼠不算任何人抓的),而胡小兔抓老鼠时则不会发生这样的事. 每次袋子里的每只老鼠被抓到的概率相等,当有一只老鼠跑出来的时候,每只老鼠跑出来的几率也相…

13年山东省赛 The number of steps（概率dp水题）

转载请注明出处: http://www.cnblogs.com/fraud/ ——by fraud The number of steps Time Limit: 1 Sec Memory Limit: 128 M Description Mary stands in a strange maze, the maze looks like a triangle(the first layer have one room,the second layer have two ro…

hdu4405Aeroplane chess 概率dp水题

//从0到n有n+1个格子 //对于格子i,掷一次骰子的数为x.那么能够从位置i到位置i+x //格子之间有连线,假设格子a和b有连线,那么从a到b不用掷骰子 //求从0到n的骰子掷的次数的期望 //dp[i] = 1/6*segma(dp[k]) + 1 (i<=k<=i+6) #include<cstdio> #include<iostream> #include<cstring> using namespace std ; const int maxn…

ACM ：漫漫上学路 -DP -水题

CSU 1772 漫漫上学路 Time Limit: 1000MS Memory Limit: 131072KB 64bit IO Format: %lld & %llu Submit Status Description 对于csuxushu来说,能够在CSU(California State University)上学是他一生的荣幸.CSU校园内的道路设计的十分精巧,由n+1条水平道路和n+1条竖直道路等距交错而成,充分体现了校园深厚的文化底蕴.然而不幸的是CS市每到夏季,天降大雨,…

[poj2247] Humble Numbers (DP水题)

DP 水题 Description A number whose only prime factors are 2,3,5 or 7 is called a humble number. The sequence 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 25, 27, ... shows the first 20 humble numbers. Write a program to find and print…