## Problem:-

India is a cricket crazy nation. Chang also loves cricket and computations related to cricket. Chang has created a Cricket app.This app analyses the performance of a cricketer. If a cricketer under-performs, then a negative rating is awarded. If performance is good, then positive rating is awarded to the cricketer.Chang wants to analyse the performance of a cricketer over a period of

Input

The first line contain number of matches "

Output

Print a single integer ie. the maximum consistent sum of rating of the cricketer if it is positive otherwise output

Constraint

*N*matches. Chang wants to find consistency of a cricketer. So he wants to find out the maximum consistent sum of cricket rating of a batsman or a bowler only if his overall rating is positive over that period. Help chang in doing so.Input

The first line contain number of matches "

*N*" over which the analysis is to be done. The second line contains those ratings of a batsman/bowler in those*N*matches.Output

Print a single integer ie. the maximum consistent sum of rating of the cricketer if it is positive otherwise output

*0*(zero).Constraint

Explanation

here the maximum consistent and continuous sum of rating is

Time Limit:3.0 sec(s) for each input file.

Memory Limit:256 MB

Source Limit:1024 KB