#include <bits/stdc++.h>

using namespace std;

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

    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;
        } else {
            prev = v[i];
            cnt = 1;
            temp = i;
        }
        if (cnt == 3) {
            start = temp + 1;
            cnt = 2;
        }
        ++end;

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