Arbitrage Time Limit: 1000MS   Memory Limit: 65536K Total Submissions: 21300   Accepted: 9079 Description Arbitrage is the use of discrepancies in currency exchange rates to transform one unit of a currency into more than one unit of the same currenc…

题目传送门 /* 最短路:Floyd模板题 只要把+改为*就ok了,热闹后判断d[i][i]是否大于1 文件输入的ONLINE_JUDGE少写了个_,WA了N遍:) */ #include <cstdio> #include <iostream> #include <cstring> #include <algorithm> #include <string> #include <map> #include <cmath>…

POJ 2240 Arbitrage / ZOJ 1092 Arbitrage / HDU 1217 Arbitrage / SPOJ Arbitrage(图论,环) Description Arbitrage is the use of discrepancies in currency exchange rates to transform one unit of a currency into more than one unit of the same currency. For exa…

链接:poj 2240 题意:首先给出N中货币,然后给出了这N种货币之间的兑换的兑换率. 如 USDollar 0.5 BritishPound 表示 :1 USDollar兑换成0.5 BritishPound. 问在这N种货币中是否存在货币经过若干次兑换后,兑换成原来的货币能够使货币量添加. 思路:本题事实上是Floyd的变形.将变换率作为构成图的路径的权值.只是构成的图是一个有向图. 最后将松弛操作变换为:if(dis[i][j]<dis[i][k]*dis[k][j]). #includ…

Arbitrage Time Limit: 1000MS   Memory Limit: 65536K Total Submissions:27167   Accepted: 11440 Description Arbitrage is the use of discrepancies in currency exchange rates to transform one unit of a currency into more than one unit of the same currenc…

链接: http://poj.org/problem?id=2240 http://acm.hust.edu.cn/vjudge/contest/view.action?cid=22010#problem/F Arbitrage Time Limit: 1000MS   Memory Limit: 65536K Total Submissions: 13067   Accepted: 5493 Description Arbitrage is the use of discrepancies i…

http://poj.org/problem?id=2240 题意:货币兑换,判断最否是否能获利. 思路:又是货币兑换题,Belloman-ford和floyd算法都可以的. #include<iostream> #include<algorithm> #include<string> #include<cstring> #include<map> using namespace std; + ; int n, m; string s1,s2;…

Time Limit: 1000 MS Memory Limit: 65536 KB 64-bit integer IO format: %I64d , %I64u   Java class name: Main [Submit] [Status] [Discuss] Description Arbitrage is the use of discrepancies in currency exchange rates to transform one unit of a currency in…

点击打开链接 Arbitrage Time Limit: 1000MS   Memory Limit: 65536K Total Submissions: 13434   Accepted: 5657 Description Arbitrage is the use of discrepancies in currency exchange rates to transform one unit of a currency into more than one unit of the same…

http://poj.org/problem?id=2240 题意 : 好吧,又是一个换钱的题:套利是利用货币汇率的差异进行的货币转换,例如用1美元购买0.5英镑,1英镑可以购买10法郎,一法郎可以购买0.21美元,所以0.5*10*0.21 = 1.05,从中获利百分之五,所以需要编写一个程序,在进行完转换之后能不能获利,如果能就输出Yes,反之No: 样例解释 : 3 USDollar BritishPound FrenchFranc 6 USDollar 0.5 BritishPound…