10214 - 健康的好斯坦奶牛

农民JOHN以拥有世界上最健康的奶牛为骄傲。他知道每种饲料中所包含的的牛所需的最低的维他命量是多少。请你帮助农夫喂养他的牛,以保持他们的健康,使喂给牛的饲料的种数最少。 给出牛所需的最低的维他命,输出喂给牛需要哪些种类的饲料,且所需的种类数最少。

输入

第1行:一个整数V(1<=V<=25),表示需要的维他命的种类数。 第2行:V个整数(1<=每个数<=1000),表示牛每天需要的维他命的最小量。 第3行:一个整数G(1<=G<=15),表示可用来喂牛的饲料的数量。下面G行,第i行表示编号为i饲料包含的各种维他命的量的多少。

输出

输出文件只有一行,包括:

牛必需的最小的饲料种数P 后面有P个数,表示所选择的饲料编号(按从小到大排列)。

样例

输入

4
100 200 300 400
3
50 50 50 50
200 300 200 300
900 150 389 399

输出

2 1 3

提示

Healthy Holsteins Burch & Kolstad Farmer John prides himself on having the healthiest dairy cows in the world. He knows the vitamin content for one scoop of each feed type and the minimum daily vitamin requirement for the cows. Help Farmer John feed his cows so they stay healthy while minimizing the number of scoops that a cow is fed.

Given the daily requirements of each kind of vitamin that a cow needs, identify the smallest combination of scoops of feed a cow can be fed in order to meet at least the minimum vitamin requirements.

Vitamins are measured in integer units. Cows can be fed at most one scoop of any feed type. It is guaranteed that a solution exists for all contest input data.

PROGRAM NAME: holstein INPUT FORMAT Line 1: integer V (1 <= V <= 25), the number of types of vitamins
Line 2: V integers (1 <= each one <= 1000), the minimum requirement for each of the V vitamins that a cow requires each day
Line 3: integer G (1 <= G <= 15), the number of types of feeds available
Lines 4..G+3: V integers (0 <= each one <= 1000), the amount of each vitamin that one scoop of this feed contains. The first line of these G lines describes feed #1; the second line describes feed #2; and so on.

SAMPLE INPUT (file holstein.in) 4 100 200 300 400 3 50 50 50 50 200 300 200 300 900 150 389 399

OUTPUT FORMAT The output is a single line of output that contains:

the minimum number of scoops a cow must eat, followed by: a SORTED list (from smallest to largest) of the feed types the cow is given SAMPLE OUTPUT (file holstein.out) 2 1 3

时间限制 1 秒
内存限制 128 MB
统计
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