#include <bits/stdc++.h>

using namespace std;

int main() {
    int length = 0;
    cin >> length;
    vector<int> terrain(length, 0);
    for (int i = 0; i < length; i++) {
        cin >> terrain[i];
    }
    int found_index = -1;
    int found_length = 0;

    for (int i = 0; i < length; i++) {
        int a = i;
        int l = 0;
        while(terrain[i] - terrain[a] == 1 || terrain[i] - terrain[a] == 0) {
            a++;
            l++;
        }
        if(found_length < l) {
            found_index = i;
            found_length = l;
        }

    }
    cout << found_length << " " << found_index + 1;
    return 0;
}