- Time limit: 1.00 s
- Memory limit: 512 MB
Input
The first input line has an integer $n$: the number of apples.
The next line has $n$ integers $p_1,p_2,\dots,p_n$: the weight of each apple.
Output
Print one integer: the minimum difference between the weights of the groups.
Constraints
- $1 \le n \le 20$
- $1 \le p_i \le 10^9$
Input:
5
3 2 7 4 1
Output:
1
Explanation: Group 1 has weights 2, 3 and 4 (total weight 9), and group 2 has weights 1 and 7 (total weight 8).