# Balancing Bank Accounts

Once upon a time there was a large team coming home from the ACM World Finals. The fifteen travellers were confronted with a big problem:

In the previous weeks, there had been many money transactions between them: Sometimes somebody paid the entrance fees of a theme park for the others, somebody else paid the hotel room, another one the rental car, and so on.
So now the big calculation started. Some people had paid more than others, thus the individual bank accounts had to be balanced again. "Who has to pay whom how much?", that was the question.

As such a calculation is a lot of work, we need a program now that will solve this problem next year.

Input

The input will contain one or more test cases.

Each test case starts with a line containing two integers: the number of travellers n (2 <= n <= 20) and the number of transactions t (1 <= t <= 1000). On the next n lines the names of the travellers are given, one per line. The names only consist of alphabetic characters and contain no whitespace. On the following t lines, the transactions are given in the format name1 name2 amount where name1 is the person who gave amount dollars to name2. The amount will always be a non-negative integer less than 10000.

Input will be terminated by two values of 0 for n and t.

Output

For each test case, first print a line saying "Case #i" where i is the number of the test case.

Then, on the following lines, print a list of transactions that reverses the transactions given in the input, i.e. balances the accounts again. Use the same format as in the input. Print a blank line after each test case, even after the last one.

Your solution must consist of at most n-1 transactions.
Amounts may not be negative, i.e. never output "A B -20", output "B A 20" instead.
If there is more than one solution satisfying these restrictions, anyone is fine.

Sample Input

2 1
Donald
Dagobert
Donald Dagobert 15
4 4
John
Mary
Cindy
Arnold
John Mary 100
John Cindy 200
Cindy Mary 40
Cindy Arnold 150
0 0

Sample Output

Case #1
Dagobert Donald 15

Case #2
Mary John 140
Cindy John 10
Arnold John 150

• 写回答

#### 2条回答默认 最新

• threenewbee 2017-03-03 21:15
关注
本回答被题主选为最佳回答 , 对您是否有帮助呢?
评论

#### 悬赏问题

• ¥15 spyder运行重复
• ¥15 我考考你，这代码是对的还是错的？
• ¥15 我用C语言easyx图形库绘制了一个3d游戏方框透视，但进入游戏时候鼠标准星对准方框边缘 鼠标光标就会弹出来这是啥情况怎样让光标对准绘制的方框点击鼠标不弹出光标好烦这样
• ¥20 用Power Query整合的问题
• ¥20 基于python进行多背包问题的多值编码
• ¥15 相同型号电脑与配置，发现主板有一台貌似缺少了好多元器件似的，会影响稳定性和使用寿命吗？
• ¥15 C语言：数据子序列基础版
• ¥20 powerbulider 导入excel文件，显示不完整