Chef and Subarray | CodeChef

Chef and Subarray

Problem code: CHEFZOT

All submissions for this problem are available.

Read problems statements in Mandarin Chinese and Russian.

Chef loves research! Now he is looking for subarray of maximal length with non-zero product.

Chef has an array A with N elements: A1, A2, ..., AN.

Subarray Aij of array A is elements from index i to index j: Ai, Ai+1, ..., Aj.

Product of subarray Aij is product of all its elements (from ith to jth).

Input

  • First line contains sinlge integer N denoting the number of elements.
  • Second line contains N space-separated integers A1, A2, ..., AN denoting the elements of array.

 

Output

  • In a single line print single integer - the maximal length of subarray with non-zero product.

 

Constraints

  • 1 ≤ N ≤ 100000
  • 0 ≤ Ai ≤ 10000

 

Example

Input:
6
1 0 2 3 0 4

Output:
2

Input:
1
0

Output:
0

Input:
3
1 0 1

Output:
1

 

Explanation

For the first sample subarray is: {2, 3}.

For the second sample there are no subbarays with non-zero product.

For the third sample subbarays is {1}, (the first element, or the third one).

Author: berezin
Tester: 2★shiplu
Editorial http://discuss.codechef.com/problems/CHEFZOT
Tags ad-hoc, berezin, cakewalk, june14
Date Added: 18-03-2014
Time Limit: 1 sec
Source Limit: 50000 Bytes
Languages: C, CPP14, JAVA, PYTH, PYTH 3.6, CS2, PAS fpc, PAS gpc, RUBY, PHP, GO, NODEJS, HASK, SCALA, D, PERL, FORT, WSPC, ADA, CAML, ICK, BF, ASM, CLPS, PRLG, ICON, SCM qobi, PIKE, ST, NICE, LUA, BASH, NEM, LISP sbcl, LISP clisp, SCM guile, JS, ERL, TCL, PERL6, TEXT, CLOJ, FS


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