// UUID: e0eb8f14-8764-46e4-a253-2d641000ef23
#include <bits/stdc++.h>
using namespace std;

int main() {
	int n; cin >> n;
    vector<int> nums(n);
    for (int i = 0; i < n; i++) {
        cin >> nums[i];
    }

    int big = -1;
    int small = nums[0];
    int start = 0;
    int len = 0;
    int ind = 0;
    for (int i = 1; i < n; i++) {
        if (abs(nums[i] - nums[i-1]) <= 1) {
            if (nums[i] - nums[i-1] == 1) {
                if (small == nums[i-1]) {
                    big = nums[i];
                }
                else {
                    start = i;
                    small = nums[i];
                    big = -1;
                    continue;
                }
            }
            else if (nums[i] - nums[i-1] == -1) {
                if (big == -1) {
                    big = small;
                    small = nums[i];
                }
                else {
                    if (big == nums[i-1]) {
                        small = nums[i];
                    }
                    else {
                        start = i;
                        small = nums[i];
                        big = -1;
                        continue;
                    }
                }
            }

            if (len < i - start + 1) {
                len = i - start + 1;
                ind = start + 1;
            }
        }
        else {
            start = i;
            small = nums[i];
            big = -1;
        }
    }

    cout << len << " " << ind;
}