GSS1  Can you answer these queries I
You are given a sequence A[1], A[2], ..., A[N] . ( A[i] ≤ 15007 , 1 ≤ N ≤ 50000 ). A query is defined as follows:
Query(x,y) = Max { a[i]+a[i+1]+...+a[j] ; x ≤ i ≤ j ≤ y }.
Given M queries, your program must output the results of these queries.
Input
 The first line of the input file contains the integer N.
 In the second line, N numbers follow.
 The third line contains the integer M.
 M lines follow, where line i contains 2 numbers xi and yi.
Output
Your program should output the results of the M queries, one query per line.
Example
Input: 3 1 2 3 1 1 2 Output: 2
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nyxf4ll_:
20151225 07:35:45
no empty subset 

nyxf4ll_:
20151225 07:35:01
quite tricky... 

anshal dwivedi:
20151223 17:04:08
uff! after 3 hours debugging finally got AC........ :)


MAYANK NARULA:
20151216 18:28:11
To think the problem designer could have come this far in thinking ahead !!!.....Finally solved it... 

m.ajaj94:
20151208 21:56:50
This problem really taught me a lot


justforpractic:
20151129 06:51:37
If the aeeay is 1inexed how is the output of the sample 2 ? 

gulshan_raj:
20151126 09:04:06
Learnt a load of new things 

irbis9:
20151115 20:33:35
Can't this be solved using maximum subarray algorithm from CLRS? 

carofe82:
20151021 02:14:27
The time limit is per test case and it is very tight, so you don't want to use an buffered output otherwise you'll get a TLE. Last edit: 20151025 22:14:08 

Parikshit:
20151019 17:08:21
stupendous problem!! 
Added by:  Nguyen Dinh Tu 
Date:  20061101 
Time limit:  0.115s0.230s 
Source limit:  5000B 
Memory limit:  1536MB 
Cluster:  Cube (Intel G860) 
Languages:  All except: ERL JSRHINO NODEJS PERL6 VB.NET 