热烈祝贺我校在线裁判系统开通试运行。。。

系统目前支持C、C++、Java、Python语言的在线评判,欢迎试用。

本校学生请用8位学号作用户名、昵称请填写真实姓名,学校字段请填写班级。不按此要求注册的帐号将被删除。相关考试成绩无法登记导出。


问题 1071. -- English Game

1071: English Game

时间限制: 1 Sec  内存限制: 128 MB
提交: 2  解决: 1
[提交][状态][讨论版]

题目描述

This English game is a simple English words connection game.

The rules are as follows: there are N English words in a dictionary, and every word has its own weight v. There is a weight if the corresponding word is used. Now there is a target string X. You have to pick some words in the dictionary, and then connect them to form X. At the same time, the sum weight of the words you picked must be the biggest.

输入

There are several test cases. For each test, N (1<=n<=1000) and X (the length of x is not bigger than 10000) are given at first. Then N rows follow. Each row contains a word wi (the length is not bigger than 30) and the weight of it. Every word is composed of lowercases. No two words in the dictionary are the same.

输出

For each test case, output the biggest sum weight, if you could not form the string X, output -1.

样例输入

1 aaaa a 2 3 aaa a 2 aa 5 aaa 6 4 abc a 1 bc 2 ab 4 c 1 3 abcd ab 10 bc 20 cd 30 3 abcd cd 100 abc 1000 bcd 10000

样例输出

8 7 5 40 -1

提示

来源

[提交][状态][讨论版]