#include <iostream>
#include <vector>
#include <deque>

#define ll long long
using namespace std;

//ifstream cin ("input.in");
//ofstream cout ("output.out");

ll n,m,i,j,a,maxi=1,start,f,s,p,lastf,lasts;

int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(0); cout.tie(0);

    cin>>n;
    cin>>f;
    start=1;
    for (i=2;i<=n;++i)
    {
        cin>>a;
        if (a==f) lastf=i;
        else if (a==s) lasts=i;
        else 
        {
            if (!s)
            {
                if (abs(a-f)==1)
                {
                    s=a;
                    lasts=i;
                }
                else 
                {
                    f=a;
                    lastf=i;
                    start=i;
                }
            }
            else
            {
               if (abs(a-s)==1)
                {
                    f=s;
                    s=a;
                    start=lastf+1;
                    lastf=lasts;
                    lasts=i;
                }
                else 
                {
                    f=a;
                    lastf=i;
                    start=i;
                    s=0;
                    lasts=0;
                } 
            }
        }
        if (i-start+1>maxi)
        {
            maxi=i-start+1;
            p=start;
        }
    }
    cout<<maxi<<" "<<p;
}