IOI '95 - Eindhoven, Netherlands













In a shop each kind of product has a price. For example, the price of a
flower is
A special offer consists of one or more product items for a reduced price. Examples:
- three flowers for
ICU instead of , or - two vases together with one flower for
ICU instead of .
Write a program that calculates the price a customer has to pay for certain items, making optimal use of the special offers. That is, the price should be as low as possible. You are not allowed to add items, even if that would lower the price.
For the prices and offers given above, the (lowest) price for three
flowers and two vases is
Input Specification
The input has a set of offers followed by a purchase.
Line |
|
Line |
Each line describes an offer using several integers. The first integer is |
Line |
The first line contains the number |
Line |
Each of the subsequent |
Output Specification
A single line with one integer: the lowest possible price to be paid for the purchases.
Sample Input
2
1 7 3 5
2 7 1 8 2 10
2
7 3 2
8 2 5
Sample Output
14
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