1234

#include <iostream>

using namespace std;

void citire(int a[], int &n)
{
    cin>>n;
    for(int i=1;i<=n;i++)
        cin>>a[i];
}

void prelucrare(int a[],int n, int &incm, int &sfm)
{
    int inc=0, sf=-1;
    incm=0;
    sfm=-1;
    for(int i=1;i<=n;i++)
        if(a[i]==0)
            if(inc==0)
                inc=sf=i;
            else
                sf=i;
        else
        {
            if(sf-inc+1>sfm-incm+1)
            {
                sfm=sf;
                incm=inc;
            }
            inc=0;
            sf=-1;
        }
    if(sf-inc+1>sfm-incm+1)
    {
        sfm=sf;
        incm=inc;
    }
}
int main()
{
    int n, v[1001], incm,sfm;
    citire(v,n);
    prelucrare(v,n,incm,sfm);
    cout<<incm<<" "<<sfm;
    return 0;
}