#include <bits/stdc++.h>
using namespace std;
#include <atcoder/all>
using namespace atcoder;
int op(int a, int b) {
	return max(a, b);
}
int e() {
	return -1;
}
int main () {
	int N;
	cin >> N;
	segtree<int, op, e> sg(N);
	std::vector<int> lv(N), A(N);
	for (int i = 0; i < N; i ++) {
		int a;
		cin >> a;
		a --;
		A[i] = a;
		lv[i] = sg.prod(0, a) + 1;
		sg.set(a, lv[i]);
	}
	int siz = *max_element(lv.begin(), lv.end()) + 1;
	vector<int> mx(siz, N + 100), my(siz, N + 100);
	for (int i = 0; i < N; i ++) {
		int l = lv[i];
		mx[l] = min(mx[l], i+1);
		my[l] = min(my[l], A[i]+1);
	}
	for (int i = 0; i < siz; i ++) {
		printf("%d %d\n", mx[i], my[i]);
	}
	cout << flush;
}