#include <bits/stdc++.h>

using namespace std;

int main() {
    int n, cnt = 0, start = 0, end = 0, prev, temp = 0;
    int mx_start = 0, mx_end = 0;
    cin >> n;
    vector<int> v(n), idx;

    if (n == 0) {
        cout << "0 0";
        return 0;
    }

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

    prev = v[0];
    for (int i = 0; i < n; ++i) {
        if (prev == v[i]) {
            ++cnt;
            idx.push_back(i);
        } else {
            idx.clear();
            prev = v[i];
            cnt = 1;
        }
        if (cnt == 3) {
            start = idx[0] + 1;
            idx.erase(idx.begin());
            cnt = 2;
        }
        ++end;

        if (end - start > mx_end - mx_start) {
            mx_end = end;
            mx_start = start;
        }
    }
    cout << mx_start + 1 << ' ' << mx_end;
}