using System;
public class Program
{
public static int FindOne(int[] array){
int max=0;
int number=0;
for(int i=0 ; i<array.Length ; i++){
if(array[i]==1){
number++;
if(number>max){
max=number;
}
else{
number=0;
return max;
public static void Main()
int[] array={1,1,0,0,1,1,1,1,1,1};
Console.WriteLine(FindOne(array));