using System;
public class Program
{
public static void Main()
int[] arr = {0,0,1,1,0,0,0,1,0,0,1,1,1,0};
int size = arr.Length;
int count=0,max=0;
for(int i=0;i<size;i++)
if(arr[i]==1)
count++;
if(max<count)
max= count;
}
else
count=0;
Console.WriteLine("\n {0}", max);