#include <bits/stdc++.h>
using namespace std;
template <class F> class y_combinator {
    F f;

   public:
    y_combinator(F&& f) : f(std::forward<F>(f)) {}
    template <class... Args> auto operator()(Args&&... args) const { return f(*this, std::forward<Args>(args)...); }
};
using ll = long long;
using ld = long double;
using u8 = uint8_t;
using u32 = uint32_t;
using u64 = uint64_t;
using vi = vector<int>;
using vl = vector<ll>;
using pii = pair<int, int>;
using pll = pair<ll, ll>;
template <class T, class U = std::less<T>> using prique = std::priority_queue<T, std::vector<T>, U>;
inline constexpr int popcnt(u64 x) noexcept { return __builtin_popcountll(x); }
template <class T> T floor(T a, T b) noexcept { return a / b - (a % b && (a ^ b) < 0); }
template <class T> T ceil(T a, T b) noexcept { return floor(a + b - 1, b); }
template <class T> bool chmin(T& x, const T& y) noexcept { return (x > y ? x = y, true : false); }
template <class T> bool chmax(T& x, const T& y) noexcept { return (x < y ? x = y, true : false); }
template <class T> void dedup(std::vector<T>& v) { std::sort(std::begin(v), std::end(v)), v.erase(std::unique(std::begin(v), std::end(v)), std::end(v)); }
void SCAN() {}
template <class H, class... T> void SCAN(H& h, T&... t) { std::cin >> h, SCAN(t...); }
#define INT(...) int __VA_ARGS__; SCAN(__VA_ARGS__)
#define LL(...) long long __VA_ARGS__; SCAN(__VA_ARGS__)
#define LD(...) long double __VA_ARGS__; SCAN(__VA_ARGS__)
#define STR(...) std::string __VA_ARGS__; SCAN(__VA_ARGS__)
#define CHAR(...) char __VA_ARGS__; SCAN(__VA_ARGS__)
#define VEC(type, name, size) std::vector<type> name(size); for (int i = 0; i < (int)size; i++) SCAN(name[i]);
#define VV(type, name, h, w) std::vector<std::vector<type>> name(h, std::vector<type>(w)); for (int i = 0; i < (int)h; i++) for (int j = 0; j < (int)w; j++) SCAN(name[i][j]);
#define overload4(a, b, c, d, e, ...) e
#define rep1(a) for (long long _i = 0; _i < (a); _i++)
#define rep2(i, a) for (long long i = 0; i < (a); i++)
#define rep3(i, a, b) for (long long i = (a); i < (b); i++)
#define rep4(i, a, b, c) for (long long i = (a); i < (b); i += (c))
#define rep(...) overload4(__VA_ARGS__, rep4, rep3, rep2, rep1)(__VA_ARGS__)
#define rrep(i, a, b, c) for (long long i = (a); i > (b); i += (c))
#define all(x) std::begin(x), std::end(x)
#define rall(x) std::rbegin(x), std::rend(x)
#define len(x) (long long)(size(x))
#define pb push_back
#ifndef LOCAL
#define debug(...)
#endif

#include <atcoder/segtree>
#include <atcoder/modint>
using mint = atcoder::modint;
int op(int a, int b) { return min(a, b); }
int e() { return 1e9; }
void run_case() {
    INT(N);
    VEC(int, P, N);
    rep(i, N) P[i]--;
    atcoder::segtree<int, op, e> seg(P);
    int c = N;
    while (c) {
        vi xs;
        int prod = e();
        auto f = [&](int x) -> bool {
            return x >= prod;
        };
        int it = 0;
        while (it < N) {
            int r = seg.max_right(it, f);
            if (r < N) {
                xs.push_back(r);
                prod = P[r];
            }
            it = r;
        }
        int xx = 1e9, yy = 1e9;
        for (int x : xs) {
            chmin(xx, x + 1);
            chmin(yy, P[x] + 1);
            seg.set(x, e());
            c--;
        }
        cout << xx << " " << yy << "\n";
    }
}
int main() {
    std::ios_base::sync_with_stdio(false);
    std::cin.tie(nullptr);
    std::fixed(std::cout).precision(16);
    int T = 1;
    while (T--) run_case();
    return 0;
}