|시간 제한||메모리 제한||제출||정답||맞힌 사람||정답 비율|
|2 초||512 MB||25||9||9||47.368%|
To celebrate Children's Day a mother of three brothers - Anton, Dmytro and Borys - gave them loads of sweets. The treats are packed in n boxes, there are ai sweets in the i-th box. The brothers want to share the boxes justly. They agreed to the following rules:
In the first line of the standard input there is an integer n (3 ≤ n ≤ 24), denoting the number of boxes. The second line consists of n positive integers ai (1 ≤ ai ≤ 1,000,000,000), denoting the number of sweets in the boxes.
In the only line of standard output you should write one integer - the difference between the numbers of sweets given to Anton and Borys.
4 5 4 7 6