ol_4_16

#include <iostream>
#include <fstream>
#include <vector>

using namespace std;

int main()
{
    ifstream cin("input.txt");

    int n;
    cin>>n;

    vector <int> l;
    l.push_back(0);
    for(int i = 0; i < n; i++)
    {
        int cur;
        cin>>cur;

        if (cur > 0)
            l[l.size()-1]++;
        else if (l[l.size()-1] > 0)
            l.push_back(0);
    }

    int mx = 0;
    for (int j = 0; j < l.size(); j++)
        mx = max(mx, l[j]);

    cout<<mx;
}