题意:每两种货币之间都有不同的汇率  如果换回自己最后是赚的 输出Yes 否则是No 因为最多只有三十种货币 所以用Floyd是可行的 与一般的最短路板子不同的地方 汇率是要乘而不是加 如果乘上一个小于1的数就会比之前小 将每种货币看作点 汇率建边 如果这两种货币不能兑换 就设为0 最后与自己判断是否大于1 如果是 则存在套利 如果不是就不存在 代码如下: #include <iostream> #include <cstdio> #include <cstring>…

Arbitrage Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 5679    Accepted Submission(s): 2630 Problem Description Arbitrage is the use of discrepancies in currency exchange rates to transform…

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…

Arbitrage Problem 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 example, suppose that 1 US Dollar buys 0.5 British pound, 1 British p…

Arbitrage http://acm.hdu.edu.cn/showproblem.php?pid=1217 Problem 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 example, suppose that…

题意  给你n种币种之间的汇率关系  推断是否能形成套汇现象  即某币种多次换为其他币种再换回来结果比原来多 基础的最短路  仅仅是加号换为了乘号 #include<cstdio> #include<cstring> #include<string> #include<map> using namespace std; map<string, int> na; const int N = 31; double d[N], rate[N][N],…

题目:http://acm.hdu.edu.cn/showproblem.php?pid=1217 /************************************************************************/ /* hdu Arbitrage floyd求最短路径 题目大意:floyd算法,求得两点之间最短距离,(u,v) = min( (u,v),(u,w)+(w,v) ); 此题,是求其能够赚钱,即最大生成树,且过程是相乘的,公式:( u, v) =…

题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=1217 题目大意:通过货币的转换,来判断是否获利,如果获利则输出Yes,否则输出No. 这里介绍一个STL中的map容器去处理数据,map<string,int>V,M; 现在我目前的理解是将字符串转换成数字,然后就是根据spfa的模板找最短路了..哇哈哈( ⊙o⊙ )哇 #include <iostream> #include <cstdio> #include <m…

Arbitrage Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 6360    Accepted Submission(s): 2939 Problem Description Arbitrage is the use of discrepancies in currency exchange rates to transform o…

Arbitrage Time Limit: 1000MS   Memory Limit: 65536K Total Submissions: 15640   Accepted: 6563 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…