#include<iostream>
#include<math.h>

using namespace std;

int main()
{
    int n;
    cin >> n;
    int max = 0;
    int s = -1;
    int current = 0;
    int cIndex = -1;
    int x, lx;
    cin >> lx;
    for(int i = 0; i < n - 1; i++)
    {
        cin >> x;
        if(abs(lx - x) <= 1)
        {
            if(current == 0)
            {
                cIndex = i;
            }
            current++;
        }
        else
        {
            if(current > max)
            {
                max = current;
                s = cIndex;
            }
            current = 0;
        }
        lx = x;
    }
    if(current > max)
    {
        max = current;
        s = cIndex;
    }
    cout << s + 1 << " " << max;
}