1646 - 第四届“恒生杯”程序设计大赛决赛 D

Time Limit : 1 Second

Memory Limit : 256 MB

Submission: 163

Solved: 32

Description

skyjiange get a array A consist of n integers, he want to know what is the maximum absolute sum in all sub-arrays, sub-arrays is some array A[i...j], absolute sum is equal to |sum(A[i...j])|.

Input

each line contains a integer n(1<=n<=100000), follow by n integers(|A[i]|<=10000).

Output

print the maximum abs sum.

sample input
3 1 -2 5 
3 2 -1 5
sample output
5
6
hint
source
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