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

hide comments
flyingduchman_: 2016-07-21 14:16:15

Took almost one month to get accepted

naksh9619: 2016-07-19 02:00:07

good problem :)

Last edit: 2016-07-19 22:32:40
baadshah_: 2016-06-26 14:15:48

Finally AC took whole DAY!!

Deepak : 2016-06-18 17:27:55

finally AC..great problem for beginners.thanks @AbhishekRajput

oalieno: 2016-05-11 15:43:27

Did anyone use Treap to solve this problem?
I keep getting TLE using Treap...(sad...)

mars_ch: 2016-05-02 08:34:46

同意楼上!!

yousiki: 2016-05-01 05:38:06

TL is too strict

geekyadity: 2016-04-14 15:04:18

Use printf, scanf. ( sync_with_stdio(false) ) gives TLE with the same code

a_b_c12345: 2016-04-10 09:16:53

yoo..!! after 2 WA and 2 TLE finally accepted. To get AC from TLE just changed input array and tree into global.

minhthai: 2016-02-14 14:50:58

why hate java so much :((
for once, please increase the time limit for java


Added by:Nguyen Dinh Tu
Date:2006-11-01
Time limit:0.115s-0.230s
Source limit:5000B
Memory limit:1536MB
Cluster: Cube (Intel G860)
Languages:All except: ERL JS NODEJS PERL 6 VB.net