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【floyd神器】HDU 1217 Arbitrage

http://acm.hdu.edu.cn/showproblem.php?pid=1217 题意:给出各种钱之间的兑换机制,求不断兑换后是否可以产生利润? 对于第一个案例:start with 1 US dollar and buy 0.5 ...
基德KID.1412 评论(0) 有1818人浏览 2011-08-14 22:09

杭电 hdu 2717 Catch That Cow

/* THE PROGRAM IS MADE BY PYY */ /*----------------------------------------------------------------------------// Copyright (c) 2011 panyanyany All rights reserved. URL : http://acm.hdu.edu.cn ...
panyanyany 评论(3) 有1215人浏览 2011-08-14 20:43

杭电 hdu 1312 Red and Black

/* THE PROGRAM IS MADE BY PYY */ /*----------------------------------------------------------------------------// Copyright (c) 2011 panyanyany All rights reserved. URL : http://acm.hdu.edu.cn ...
panyanyany 评论(0) 有1245人浏览 2011-08-14 15:56

杭电 hdu 1241 Oil Deposits

/* THE PROGRAM IS MADE BY PYY */ /*----------------------------------------------------------------------------// Copyright (c) 2011 panyanyany All rights reserved. URL : http://acm.hdu.edu.cn ...
panyanyany 评论(0) 有1102人浏览 2011-08-14 15:24

hdu 1059 Dividing(二进制转化优化)

Dividing Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 5887    Accepted Submission(s): 1594 Problem Description Marsha and Bill own a collec ...
gzhu_101majia 评论(0) 有2208人浏览 2011-08-13 17:02

hdu 2191 珍惜现在,感恩生活(我的第一个多重背包)

悼念512汶川大地震遇难同胞——珍惜现在,感恩生活 Time Limit: 1000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 4215    Accepted Submission(s): 1690   Problem Description 急!灾区的食物依 ...
gzhu_101majia 评论(0) 有1827人浏览 2011-08-13 16:42

hdu 1114 Piggy-Bank(我的第一个完全背包)

Piggy-Bank Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 2940    Accepted Submission(s): 1452 Problem Description Before ACM can do anything ...
gzhu_101majia 评论(0) 有4577人浏览 2011-08-13 16:35

hdu 2602 Bone Collector(我的第一个01背包)

Bone Collector Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 7904    Accepted Submission(s): 2949 Problem Description Many years ago , in Te ...
gzhu_101majia 评论(0) 有1114人浏览 2011-08-13 16:28

【次小生成树】POJ 1679 The Unique MST

http://poj.org/problem?id=1679 题意:问最小生成树是否唯一 思路: 用Kruskal先求最小生成树,结果即为min,把所用到的边记录下来(这里是记录的对应的下表),然后枚举这些边, 每次去掉一个边再求一次最小生成树,结果为tmin,如果能构成最小生成树tmin==min,则说明最小生成树不唯一 Sample Input 2 3 3 1 2 1 2 3 2 3 1 ...
基德KID.1412 评论(0) 有1056人浏览 2011-08-12 10:00

【拓扑排序】HDU 2647 Reward【2012/3/25更新】

http://acm.hdu.edu.cn/showproblem.php?pid=2647 题意:先给出人数n和关系数m,再给出工人之间的工资大小关系,例如给出a b表示a>b,求老板至少要给多少工资【注:工人至少有888元的工资】 Sample Input 2 1 1 2 2 2 1 2 2 1 6 5 2 4 3 6 3 5 1 2 1 3 4 3 1 2 3 4 2 3 Samp ...
基德KID.1412 评论(0) 有1963人浏览 2011-08-11 19:26

【欧拉函数+容斥原理】HDU 1695 GCD

http://acm.hdu.edu.cn/showproblem.php?pid=1695 题意:求[a,b]和[c,d]中分别取一个数,问取到的两个数的gcd=k的对数!!其中(2,3)跟(3,2)这2种类型只算一种,视为重复 Sample Input 2 1 3 1 5 1 1 11014 1 14409 9 Sample Output Case 1: 9 Case 2: 736427 ...
基德KID.1412 评论(0) 有2117人浏览 2011-08-11 15:08

hdu 1023 Train Problem II(大数卡特兰数-出栈次序问题)

Train Problem II Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 2111    Accepted Submission(s): 1238 Problem Description As we all kn ...
gzhu_101majia 评论(1) 有4899人浏览 2011-08-11 11:38

hdu 2067 小兔的棋盘(卡特兰数)

小兔的棋盘 Time Limit: 1000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 2323    Accepted Submission(s): 1360 Problem Description 小兔的叔叔从外面旅游回来给她带来了一个礼物,小兔高兴地跑回自己 ...
gzhu_101majia 评论(0) 有3198人浏览 2011-08-11 11:27

hdu 1496 Equations(非常巧妙的hash)

Equations Time Limit: 6000/3000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 1729    Accepted Submission(s): 662 Problem Description Consider equations h ...
gzhu_101majia 评论(0) 有3402人浏览 2011-08-11 11:06

hdu 1425 sort(最简单的hash)

sort Time Limit: 6000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 12363    Accepted Submission(s): 3366 Problem Description 给你n个整数,请按从大到小的顺序输出其中前m大的数。   ...
gzhu_101majia 评论(0) 有2023人浏览 2011-08-11 10:47

【拓扑排序】HDU 1285 确定比赛名次

http://acm.hdu.edu.cn/showproblem.php?pid=1285 Problem Description 有N个比赛队(1<=N<=500),编号依次为1,2,3,。。。。,N进行比赛,比赛结束后,裁判委员会要将所有参赛队伍从前往后依次排名,但现在裁判委员会不能直接获得每个队的比赛成绩,只知道每场比赛的结果,即P1赢P2,用P1,P2表示,排名时P1在P2 ...
基德KID.1412 评论(2) 有1196人浏览 2011-08-10 21:38

【超级hash大法】HDU 1496 Equations

http://acm.hdu.edu.cn/showproblem.php?pid=1496 题意:求有多少个解!! Problem Description Consider equations having the following form: a*x1^2+b*x2^2+c*x3^2+d*x4^2=0 a, b, c, d are integers from the interval ...
基德KID.1412 评论(2) 有3298人浏览 2011-08-10 21:21

hdu 3584 Cube(三维树状数组)

Cube Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 131072/65536 K (Java/Others)Total Submission(s): 660    Accepted Submission(s): 309 Problem Description Given an N*N*N cube A, whose elem ...
gzhu_101majia 评论(0) 有2068人浏览 2011-08-10 19:21

hdu 1016 Prime Ring Problem

简单的搜索题,用递归 /* THE PROGRAM IS MADE BY PYY */ /*----------------------------------------------------------------------------// Copyright (c) 2011 panyanyany All rights reserved. URL : http://ac ...
panyanyany 评论(0) 有969人浏览 2011-08-10 16:25

hdu 2199 Can you solve this equation?

Can you solve this equation? Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 1226    Accepted Submission(s): 625 Problem Description Now,given ...
gzhu_101majia 评论(0) 有1310人浏览 2011-08-10 11:27

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