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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oclewx:
20180117 18:37:39
first time i got runtime error (SIGSEGV) , then TLE then WA and finally AC


manvscode:
20180107 15:15:58
@geek_lady take i=1 and j=1 (assuming 0indexing in array) we get sum =2.


excursionist:
20180102 18:21:34
Testcase 9 gives TLE :( 

senacoder111:
20180102 16:17:58
must if you want to learn segment tree 

vsr625:
20171222 12:39:21
No, you should get 118 as answer


m2do:
20171222 12:23:07
what would be the output of the following case? someone, please explain. My code gives 123 as output, am I correct?


somanshu_s:
20171209 22:12:53
Hint for this problem : Build segment tree on this structure :


chachaji_harsh:
20171208 08:00:03
Last edit: 20171208 14:14:56 

bash_turtle:
20171204 18:05:00
i am getting a runtine error (SIGSEGV ).Can someone help please


manuparmar35:
20171129 16:38:04
really a difficult problem someone please explain how can it be solved 
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 