## solution

Use a tree structure which supports merge/split with $O(\log n)$. Then this problem is solved with $O(M \log N)$.

Some languages has such a structure, so you can use it simply. For example, Data.Sequence of Haskell uses a finger tree, and you can get AC using it.

## implementation

If you want to implement it by yourself, the treap is a good choice. プログラミングコンテストでのデータ構造 2 ～平衡二分探索木編～が分かりやすかったです。

#include <iostream>
#include <tuple>
#include <random>
#include <memory>
#define repeat(i,n) for (int i = 0; (i) < (n); ++(i))
using namespace std;

template <typename T>
struct treap {
typedef T value_type;
typedef double key_type;
value_type v;
key_type k;
shared_ptr<treap> l, r;
size_t m_size;
treap(value_type v)
: v(v)
, k(generate())
, l()
, r()
, m_size(1) {
}
static shared_ptr<treap> update(shared_ptr<treap> const & t) {
if (t) {
t->m_size = 1 + size(t->l) + size(t->r);
}
return t;
}
static key_type generate() {
static random_device device;
static default_random_engine engine(device());
static uniform_real_distribution<double> dist;
return dist(engine);
}
static size_t size(shared_ptr<treap> const & t) {
return t ? t->m_size : 0;
}
static shared_ptr<treap> merge(shared_ptr<treap> const & a, shared_ptr<treap> const & b) { // destructive
if (not a) return b;
if (not b) return a;
if (a->k > b->k) {
a->r = merge(a->r, b);
return update(a);
} else {
b->l = merge(a, b->l);
return update(b);
}
}
static pair<shared_ptr<treap>, shared_ptr<treap> > split(shared_ptr<treap> const & t, size_t i) { // [0, i) [i, n), destructive
if (not t) return { shared_ptr<treap>(), shared_ptr<treap>() };
if (i <= size(t->l)) {
shared_ptr<treap> u; tie(u, t->l) = split(t->l, i);
return { u, update(t) };
} else {
shared_ptr<treap> u; tie(t->r, u) = split(t->r, i - size(t->l) - 1);
return { update(t), u };
}
}
static shared_ptr<treap> insert(shared_ptr<treap> const & t, size_t i, value_type v) { // destructive
shared_ptr<treap> l, r; tie(l, r) = split(t, i);
shared_ptr<treap> u = make_shared<treap>(v);
return merge(merge(l, u), r);
}
static pair<shared_ptr<treap>,shared_ptr<treap> > erase(shared_ptr<treap> const & t, size_t i) { // (t \ t_i, t_t), destructive
shared_ptr<treap> l, u, r;
tie(l, r) = split(t, i+1);
tie(l, u) = split(l, i);
return { merge(l, r), u };
}
};

typedef treap<int> T;
int main() {
int n; cin >> n;
shared_ptr<T> t;
repeat (i,n) {
int a; cin >> a;
t = T::insert(t, i, a);
}
int m; cin >> m;
while (m --) {
int l, r; cin >> l >> r;
-- l;
shared_ptr<T> a, b, c;
tie(a, c) = T::split(t, r);
tie(a, b) = T::split(a, l);
t = T::merge(T::merge(b, a), c);
}
repeat (i,n) {
if (i) cout << ' ';
shared_ptr<T> u;
tie(t, u) = T::erase(t, 0);
cout << u->v;
}
cout << endl;
return 0;
}