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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baadshah_:
20160626 14:15:48
Finally AC took whole DAY!! 

Deepak :
20160618 17:27:55
finally AC..great problem for beginners.thanks @AbhishekRajput 

ABHISHEK RAJPUT:
20160601 20:55:49
for the one, who need right approach to the problem is::find what should be stored at each node of segment tree.


rahulpadhy:
20160520 12:47:39
Last edit: 20160603 04:24:04 

oalieno:
20160511 15:43:27
Did anyone use Treap to solve this problem?


mars_ch:
20160502 08:34:46
同意楼上！！ 

yousiki:
20160501 05:38:06
TL is too strict 

yousiki:
20160501 02:39:43
Last edit: 20160501 05:37:06 

man:
20160429 23:41:31
hell of a problem!! . confidence growing in segment trees 

Gag:
20160425 15:00:46
n<=500002 
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 JS NODEJS PERL 6 VB.net 