#include <iostream>
#include<algorithm>
using namespace std;
long long n,numar,i,m,j,k,v[1001],st,dt,secventa;
int main()
{
    cin>>n;
    for(i=1;i<=n;i++)
      cin>>v[i];

for(i=1;i<=n;i++)
    {k=0;
        if(v[i]==0)
           for(j=i;j<=n&&v[j]==0;j++)
               k++;
      if(k>secventa)
    {
       secventa=k;
       st=i;
       dt=i+k-1;
    }

    }
cout<<st<<" "<<dt;
}