Stone Pile

http://acm.timus.ru/problem.aspx?space=1&num=1005

Time Limit: 2.0 second

Memory Limit: 1 000 КБ

You have a number of stones with known weights W1…Wn. Write a program that will rearrange the stones into two piles such that weight difference between the piles is minimal.

1. Input

Input contains the number of stones N (1 <= N <= 20) and weights of the stones W1…Wn (1 <= Wi <= 100000) delimited by white space (either space characters or new lines).

2. Output

Your program should output a number representing the minimal possible weight difference between stone piles.

3. Sample Input

timus1005 (2008-02-23 15:35:52由localhost编辑)

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