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test_atcoder/arc153b.test.cpp
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- Last update: 2024-03-30 00:47:55+09:00
- Problem: https://atcoder.jp/contests/arc153/tasks/arc153_b
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Code
#define PROBLEM "https://atcoder.jp/contests/arc153/tasks/arc153_b"
#include "my_template.hpp"
#include "other/io.hpp"
#include "ds/splaytree/splaytree_basic.hpp"
void solve() {
LL(H, W);
VEC(string, G, H);
SplayTree_Basic<int, 300'000> X;
vc<int> A(H), B(W);
iota(all(A), 0), iota(all(B), 0);
using np = decltype(X)::np;
np root_1 = X.new_node(A);
np root_2 = X.new_node(B);
LL(Q);
FOR(Q) {
LL(a, b);
X.reverse(root_1, 0, a);
X.reverse(root_1, a, H);
X.reverse(root_2, 0, b);
X.reverse(root_2, b, W);
}
A = X.get_all(root_1);
B = X.get_all(root_2);
vc<string> ANS(H, string(W, '?'));
FOR(i, H) FOR(j, W) { ANS[i][j] = G[A[i]][B[j]]; }
FOR(i, H) print(ANS[i]);
}
signed main() {
solve();
return 0;
}#line 1 "test_atcoder/arc153b.test.cpp"
#define PROBLEM "https://atcoder.jp/contests/arc153/tasks/arc153_b"
#line 1 "my_template.hpp"
#if defined(LOCAL)
#include <my_template_compiled.hpp>
#else
// https://codeforces.com/blog/entry/96344
#pragma GCC optimize("Ofast,unroll-loops")
// いまの CF だとこれ入れると動かない？
// #pragma GCC target("avx2,popcnt")
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using u32 = unsigned int;
using u64 = unsigned long long;
using i128 = __int128;
using u128 = unsigned __int128;
using f128 = __float128;
template <class T>
constexpr T infty = 0;
template <>
constexpr int infty<int> = 1'000'000'000;
template <>
constexpr ll infty<ll> = ll(infty<int>) * infty<int> * 2;
template <>
constexpr u32 infty<u32> = infty<int>;
template <>
constexpr u64 infty<u64> = infty<ll>;
template <>
constexpr i128 infty<i128> = i128(infty<ll>) * infty<ll>;
template <>
constexpr double infty<double> = infty<ll>;
template <>
constexpr long double infty<long double> = infty<ll>;
using pi = pair<ll, ll>;
using vi = vector<ll>;
template <class T>
using vc = vector<T>;
template <class T>
using vvc = vector<vc<T>>;
template <class T>
using vvvc = vector<vvc<T>>;
template <class T>
using vvvvc = vector<vvvc<T>>;
template <class T>
using vvvvvc = vector<vvvvc<T>>;
template <class T>
using pq = priority_queue<T>;
template <class T>
using pqg = priority_queue<T, vector<T>, greater<T>>;
#define vv(type, name, h, ...) \
vector<vector<type>> name(h, vector<type>(__VA_ARGS__))
#define vvv(type, name, h, w, ...) \
vector<vector<vector<type>>> name( \
h, vector<vector<type>>(w, vector<type>(__VA_ARGS__)))
#define vvvv(type, name, a, b, c, ...) \
vector<vector<vector<vector<type>>>> name( \
a, vector<vector<vector<type>>>( \
b, vector<vector<type>>(c, vector<type>(__VA_ARGS__))))
// https://trap.jp/post/1224/
#define FOR1(a) for (ll _ = 0; _ < ll(a); ++_)
#define FOR2(i, a) for (ll i = 0; i < ll(a); ++i)
#define FOR3(i, a, b) for (ll i = a; i < ll(b); ++i)
#define FOR4(i, a, b, c) for (ll i = a; i < ll(b); i += (c))
#define FOR1_R(a) for (ll i = (a)-1; i >= ll(0); --i)
#define FOR2_R(i, a) for (ll i = (a)-1; i >= ll(0); --i)
#define FOR3_R(i, a, b) for (ll i = (b)-1; i >= ll(a); --i)
#define overload4(a, b, c, d, e, ...) e
#define overload3(a, b, c, d, ...) d
#define FOR(...) overload4(__VA_ARGS__, FOR4, FOR3, FOR2, FOR1)(__VA_ARGS__)
#define FOR_R(...) overload3(__VA_ARGS__, FOR3_R, FOR2_R, FOR1_R)(__VA_ARGS__)
#define FOR_subset(t, s) \
for (ll t = (s); t >= 0; t = (t == 0 ? -1 : (t - 1) & (s)))
#define all(x) x.begin(), x.end()
#define len(x) ll(x.size())
#define elif else if
#define eb emplace_back
#define mp make_pair
#define mt make_tuple
#define fi first
#define se second
#define stoi stoll
int popcnt(int x) { return __builtin_popcount(x); }
int popcnt(u32 x) { return __builtin_popcount(x); }
int popcnt(ll x) { return __builtin_popcountll(x); }
int popcnt(u64 x) { return __builtin_popcountll(x); }
int popcnt_mod_2(int x) { return __builtin_parity(x); }
int popcnt_mod_2(u32 x) { return __builtin_parity(x); }
int popcnt_mod_2(ll x) { return __builtin_parityll(x); }
int popcnt_mod_2(u64 x) { return __builtin_parityll(x); }
// (0, 1, 2, 3, 4) -> (-1, 0, 1, 1, 2)
int topbit(int x) { return (x == 0 ? -1 : 31 - __builtin_clz(x)); }
int topbit(u32 x) { return (x == 0 ? -1 : 31 - __builtin_clz(x)); }
int topbit(ll x) { return (x == 0 ? -1 : 63 - __builtin_clzll(x)); }
int topbit(u64 x) { return (x == 0 ? -1 : 63 - __builtin_clzll(x)); }
// (0, 1, 2, 3, 4) -> (-1, 0, 1, 0, 2)
int lowbit(int x) { return (x == 0 ? -1 : __builtin_ctz(x)); }
int lowbit(u32 x) { return (x == 0 ? -1 : __builtin_ctz(x)); }
int lowbit(ll x) { return (x == 0 ? -1 : __builtin_ctzll(x)); }
int lowbit(u64 x) { return (x == 0 ? -1 : __builtin_ctzll(x)); }
template <typename T>
T floor(T a, T b) {
return a / b - (a % b && (a ^ b) < 0);
}
template <typename T>
T ceil(T x, T y) {
return floor(x + y - 1, y);
}
template <typename T>
T bmod(T x, T y) {
return x - y * floor(x, y);
}
template <typename T>
pair<T, T> divmod(T x, T y) {
T q = floor(x, y);
return {q, x - q * y};
}
template <typename T, typename U>
T SUM(const vector<U> &A) {
T sm = 0;
for (auto &&a: A) sm += a;
return sm;
}
#define MIN(v) *min_element(all(v))
#define MAX(v) *max_element(all(v))
#define LB(c, x) distance((c).begin(), lower_bound(all(c), (x)))
#define UB(c, x) distance((c).begin(), upper_bound(all(c), (x)))
#define UNIQUE(x) \
sort(all(x)), x.erase(unique(all(x)), x.end()), x.shrink_to_fit()
template <typename T>
T POP(deque<T> &que) {
T a = que.front();
que.pop_front();
return a;
}
template <typename T>
T POP(pq<T> &que) {
T a = que.top();
que.pop();
return a;
}
template <typename T>
T POP(pqg<T> &que) {
T a = que.top();
que.pop();
return a;
}
template <typename T>
T POP(vc<T> &que) {
T a = que.back();
que.pop_back();
return a;
}
template <typename F>
ll binary_search(F check, ll ok, ll ng, bool check_ok = true) {
if (check_ok) assert(check(ok));
while (abs(ok - ng) > 1) {
auto x = (ng + ok) / 2;
(check(x) ? ok : ng) = x;
}
return ok;
}
template <typename F>
double binary_search_real(F check, double ok, double ng, int iter = 100) {
FOR(iter) {
double x = (ok + ng) / 2;
(check(x) ? ok : ng) = x;
}
return (ok + ng) / 2;
}
template <class T, class S>
inline bool chmax(T &a, const S &b) {
return (a < b ? a = b, 1 : 0);
}
template <class T, class S>
inline bool chmin(T &a, const S &b) {
return (a > b ? a = b, 1 : 0);
}
// ? は -1
vc<int> s_to_vi(const string &S, char first_char) {
vc<int> A(S.size());
FOR(i, S.size()) { A[i] = (S[i] != '?' ? S[i] - first_char : -1); }
return A;
}
template <typename T, typename U>
vector<T> cumsum(vector<U> &A, int off = 1) {
int N = A.size();
vector<T> B(N + 1);
FOR(i, N) { B[i + 1] = B[i] + A[i]; }
if (off == 0) B.erase(B.begin());
return B;
}
// stable sort
template <typename T>
vector<int> argsort(const vector<T> &A) {
vector<int> ids(len(A));
iota(all(ids), 0);
sort(all(ids),
[&](int i, int j) { return (A[i] == A[j] ? i < j : A[i] < A[j]); });
return ids;
}
// A[I[0]], A[I[1]], ...
template <typename T>
vc<T> rearrange(const vc<T> &A, const vc<int> &I) {
vc<T> B(len(I));
FOR(i, len(I)) B[i] = A[I[i]];
return B;
}
#endif
#line 1 "other/io.hpp"
#define FASTIO
#include <unistd.h>
// https://judge.yosupo.jp/submission/21623
namespace fastio {
static constexpr uint32_t SZ = 1 << 17;
char ibuf[SZ];
char obuf[SZ];
char out[100];
// pointer of ibuf, obuf
uint32_t pil = 0, pir = 0, por = 0;
struct Pre {
char num[10000][4];
constexpr Pre() : num() {
for (int i = 0; i < 10000; i++) {
int n = i;
for (int j = 3; j >= 0; j--) {
num[i][j] = n % 10 | '0';
n /= 10;
}
}
}
} constexpr pre;
inline void load() {
memcpy(ibuf, ibuf + pil, pir - pil);
pir = pir - pil + fread(ibuf + pir - pil, 1, SZ - pir + pil, stdin);
pil = 0;
if (pir < SZ) ibuf[pir++] = '\n';
}
inline void flush() {
fwrite(obuf, 1, por, stdout);
por = 0;
}
void rd(char &c) {
do {
if (pil + 1 > pir) load();
c = ibuf[pil++];
} while (isspace(c));
}
void rd(string &x) {
x.clear();
char c;
do {
if (pil + 1 > pir) load();
c = ibuf[pil++];
} while (isspace(c));
do {
x += c;
if (pil == pir) load();
c = ibuf[pil++];
} while (!isspace(c));
}
template <typename T>
void rd_real(T &x) {
string s;
rd(s);
x = stod(s);
}
template <typename T>
void rd_integer(T &x) {
if (pil + 100 > pir) load();
char c;
do
c = ibuf[pil++];
while (c < '-');
bool minus = 0;
if constexpr (is_signed<T>::value || is_same_v<T, i128>) {
if (c == '-') { minus = 1, c = ibuf[pil++]; }
}
x = 0;
while ('0' <= c) { x = x * 10 + (c & 15), c = ibuf[pil++]; }
if constexpr (is_signed<T>::value || is_same_v<T, i128>) {
if (minus) x = -x;
}
}
void rd(int &x) { rd_integer(x); }
void rd(ll &x) { rd_integer(x); }
void rd(i128 &x) { rd_integer(x); }
void rd(u32 &x) { rd_integer(x); }
void rd(u64 &x) { rd_integer(x); }
void rd(u128 &x) { rd_integer(x); }
void rd(double &x) { rd_real(x); }
void rd(long double &x) { rd_real(x); }
void rd(f128 &x) { rd_real(x); }
template <class T, class U>
void rd(pair<T, U> &p) {
return rd(p.first), rd(p.second);
}
template <size_t N = 0, typename T>
void rd_tuple(T &t) {
if constexpr (N < std::tuple_size<T>::value) {
auto &x = std::get<N>(t);
rd(x);
rd_tuple<N + 1>(t);
}
}
template <class... T>
void rd(tuple<T...> &tpl) {
rd_tuple(tpl);
}
template <size_t N = 0, typename T>
void rd(array<T, N> &x) {
for (auto &d: x) rd(d);
}
template <class T>
void rd(vc<T> &x) {
for (auto &d: x) rd(d);
}
void read() {}
template <class H, class... T>
void read(H &h, T &... t) {
rd(h), read(t...);
}
void wt(const char c) {
if (por == SZ) flush();
obuf[por++] = c;
}
void wt(const string s) {
for (char c: s) wt(c);
}
void wt(const char *s) {
size_t len = strlen(s);
for (size_t i = 0; i < len; i++) wt(s[i]);
}
template <typename T>
void wt_integer(T x) {
if (por > SZ - 100) flush();
if (x < 0) { obuf[por++] = '-', x = -x; }
int outi;
for (outi = 96; x >= 10000; outi -= 4) {
memcpy(out + outi, pre.num[x % 10000], 4);
x /= 10000;
}
if (x >= 1000) {
memcpy(obuf + por, pre.num[x], 4);
por += 4;
} else if (x >= 100) {
memcpy(obuf + por, pre.num[x] + 1, 3);
por += 3;
} else if (x >= 10) {
int q = (x * 103) >> 10;
obuf[por] = q | '0';
obuf[por + 1] = (x - q * 10) | '0';
por += 2;
} else
obuf[por++] = x | '0';
memcpy(obuf + por, out + outi + 4, 96 - outi);
por += 96 - outi;
}
template <typename T>
void wt_real(T x) {
ostringstream oss;
oss << fixed << setprecision(15) << double(x);
string s = oss.str();
wt(s);
}
void wt(int x) { wt_integer(x); }
void wt(ll x) { wt_integer(x); }
void wt(i128 x) { wt_integer(x); }
void wt(u32 x) { wt_integer(x); }
void wt(u64 x) { wt_integer(x); }
void wt(u128 x) { wt_integer(x); }
void wt(double x) { wt_real(x); }
void wt(long double x) { wt_real(x); }
void wt(f128 x) { wt_real(x); }
template <class T, class U>
void wt(const pair<T, U> val) {
wt(val.first);
wt(' ');
wt(val.second);
}
template <size_t N = 0, typename T>
void wt_tuple(const T t) {
if constexpr (N < std::tuple_size<T>::value) {
if constexpr (N > 0) { wt(' '); }
const auto x = std::get<N>(t);
wt(x);
wt_tuple<N + 1>(t);
}
}
template <class... T>
void wt(tuple<T...> tpl) {
wt_tuple(tpl);
}
template <class T, size_t S>
void wt(const array<T, S> val) {
auto n = val.size();
for (size_t i = 0; i < n; i++) {
if (i) wt(' ');
wt(val[i]);
}
}
template <class T>
void wt(const vector<T> val) {
auto n = val.size();
for (size_t i = 0; i < n; i++) {
if (i) wt(' ');
wt(val[i]);
}
}
void print() { wt('\n'); }
template <class Head, class... Tail>
void print(Head &&head, Tail &&... tail) {
wt(head);
if (sizeof...(Tail)) wt(' ');
print(forward<Tail>(tail)...);
}
// gcc expansion. called automaticall after main.
void __attribute__((destructor)) _d() { flush(); }
} // namespace fastio
using fastio::read;
using fastio::print;
using fastio::flush;
#define INT(...) \
int __VA_ARGS__; \
read(__VA_ARGS__)
#define LL(...) \
ll __VA_ARGS__; \
read(__VA_ARGS__)
#define U32(...) \
u32 __VA_ARGS__; \
read(__VA_ARGS__)
#define U64(...) \
u64 __VA_ARGS__; \
read(__VA_ARGS__)
#define STR(...) \
string __VA_ARGS__; \
read(__VA_ARGS__)
#define CHAR(...) \
char __VA_ARGS__; \
read(__VA_ARGS__)
#define DBL(...) \
double __VA_ARGS__; \
read(__VA_ARGS__)
#define VEC(type, name, size) \
vector<type> name(size); \
read(name)
#define VV(type, name, h, w) \
vector<vector<type>> name(h, vector<type>(w)); \
read(name)
void YES(bool t = 1) { print(t ? "YES" : "NO"); }
void NO(bool t = 1) { YES(!t); }
void Yes(bool t = 1) { print(t ? "Yes" : "No"); }
void No(bool t = 1) { Yes(!t); }
void yes(bool t = 1) { print(t ? "yes" : "no"); }
void no(bool t = 1) { yes(!t); }
#line 2 "ds/splaytree/splaytree.hpp"
// Node 型を別に定義して使う
template <typename Node, int NODES = 1'000'000>
struct SplayTree {
Node *pool;
int pid;
using np = Node *;
using X = typename Node::value_type;
using A = typename Node::operator_type;
vc<np> FREE;
SplayTree() : pid(0) { pool = new Node[NODES]; }
void free_subtree(np c) {
auto dfs = [&](auto &dfs, np c) -> void {
if (c->l) dfs(dfs, c->l);
if (c->r) dfs(dfs, c->r);
FREE.eb(c);
};
dfs(dfs, c);
}
void reset() {
pid = 0;
FREE.clear();
}
np new_root() { return nullptr; }
np new_node(const X &x) {
np n = (FREE.empty() ? &(pool[pid++]) : POP(FREE));
Node::new_node(n, x);
return n;
}
np new_node(const vc<X> &dat) {
auto dfs = [&](auto &dfs, int l, int r) -> np {
if (l == r) return nullptr;
if (r == l + 1) return new_node(dat[l]);
int m = (l + r) / 2;
np l_root = dfs(dfs, l, m);
np r_root = dfs(dfs, m + 1, r);
np root = new_node(dat[m]);
root->l = l_root, root->r = r_root;
if (l_root) l_root->p = root;
if (r_root) r_root->p = root;
root->update();
return root;
};
return dfs(dfs, 0, len(dat));
}
u32 get_size(np root) { return (root ? root->size : 0); }
np merge(np l_root, np r_root) {
if (!l_root) return r_root;
if (!r_root) return l_root;
assert((!l_root->p) && (!r_root->p));
splay_kth(r_root, 0); // splay したので prop 済
r_root->l = l_root;
l_root->p = r_root;
r_root->update();
return r_root;
}
np merge3(np a, np b, np c) { return merge(merge(a, b), c); }
np merge4(np a, np b, np c, np d) { return merge(merge(merge(a, b), c), d); }
pair<np, np> split(np root, u32 k) {
assert(!root || !root->p);
if (k == 0) return {nullptr, root};
if (k == (root->size)) return {root, nullptr};
splay_kth(root, k - 1);
np right = root->r;
root->r = nullptr, right->p = nullptr;
root->update();
return {root, right};
}
tuple<np, np, np> split3(np root, u32 l, u32 r) {
np nm, nr;
tie(root, nr) = split(root, r);
tie(root, nm) = split(root, l);
return {root, nm, nr};
}
tuple<np, np, np, np> split4(np root, u32 i, u32 j, u32 k) {
np d;
tie(root, d) = split(root, k);
auto [a, b, c] = split3(root, i, j);
return {a, b, c, d};
}
// 部分木が区間 [l,r) に対応するようなノードを作って返す
// そのノードが root になるわけではないので、
// このノードを参照した後にすぐに splay して根に持ち上げること
void goto_between(np &root, u32 l, u32 r) {
if (l == 0 && r == root->size) return;
if (l == 0) {
splay_kth(root, r);
root = root->l;
return;
}
if (r == root->size) {
splay_kth(root, l - 1);
root = root->r;
return;
}
splay_kth(root, r);
np rp = root;
root = rp->l;
root->p = nullptr;
splay_kth(root, l - 1);
root->p = rp;
rp->l = root;
rp->update();
root = root->r;
}
vc<X> get_all(const np &root) {
vc<X> res;
auto dfs = [&](auto &dfs, np root) -> void {
if (!root) return;
root->prop();
dfs(dfs, root->l);
res.eb(root->get());
dfs(dfs, root->r);
};
dfs(dfs, root);
return res;
}
X get(np &root, u32 k) {
assert(root == nullptr || !root->p);
splay_kth(root, k);
return root->get();
}
void set(np &root, u32 k, const X &x) {
assert(root != nullptr && !root->p);
splay_kth(root, k);
root->set(x);
}
void multiply(np &root, u32 k, const X &x) {
assert(root != nullptr && !root->p);
splay_kth(root, k);
root->multiply(x);
}
X prod(np &root, u32 l, u32 r) {
assert(root == nullptr || !root->p);
using Mono = typename Node::Monoid_X;
if (l == r) return Mono::unit();
assert(0 <= l && l < r && r <= root->size);
goto_between(root, l, r);
X res = root->prod;
splay(root);
return res;
}
X prod(np &root) {
assert(root == nullptr || !root->p);
using Mono = typename Node::Monoid_X;
return (root ? root->prod : Mono::unit());
}
void apply(np &root, u32 l, u32 r, const A &a) {
if (l == r) return;
assert(0 <= l && l < r && r <= root->size);
goto_between(root, l, r);
root->apply(a);
splay(root);
}
void apply(np &root, const A &a) {
if (!root) return;
root->apply(a);
}
void reverse(np &root, u32 l, u32 r) {
assert(root == nullptr || !root->p);
if (l == r) return;
assert(0 <= l && l < r && r <= root->size);
goto_between(root, l, r);
root->reverse();
splay(root);
}
void reverse(np root) {
if (!root) return;
root->reverse();
}
void rotate(Node *n) {
// n を根に近づける。prop, update は rotate の外で行う。
Node *pp, *p, *c;
p = n->p;
pp = p->p;
if (p->l == n) {
c = n->r;
n->r = p;
p->l = c;
} else {
c = n->l;
n->l = p;
p->r = c;
}
if (pp && pp->l == p) pp->l = n;
if (pp && pp->r == p) pp->r = n;
n->p = pp;
p->p = n;
if (c) c->p = p;
}
void splay(Node *me) {
// これを呼ぶ時点で、me の祖先（me を除く）は既に prop 済であることを仮定
// 特に、splay 終了時点で me は upd / prop 済である
me->prop();
while (me->p) {
np p = me->p;
np pp = p->p;
if (!pp) {
rotate(me);
p->update();
break;
}
bool same = (p->l == me && pp->l == p) || (p->r == me && pp->r == p);
if (same) rotate(p), rotate(me);
if (!same) rotate(me), rotate(me);
pp->update(), p->update();
}
// me の update は最後だけでよい
me->update();
}
void splay_kth(np &root, u32 k) {
assert(0 <= k && k < (root->size));
while (1) {
u32 sl = (root->l ? root->l->size : 0);
if (k == sl) break;
root->prop();
if (k < sl)
root = root->l;
else {
k -= sl + 1;
root = root->r;
}
}
splay(root);
}
// check(x), 左側のノード全体が check を満たすように切る
template <typename F>
pair<np, np> split_max_right(np root, F check) {
if (!root) return {nullptr, nullptr};
assert(!root->p);
np c = find_max_right(root, check);
if (!c) {
splay(root);
return {nullptr, root};
}
splay(c);
np right = c->r;
if (!right) return {c, nullptr};
right->p = nullptr;
c->r = nullptr;
c->update();
return {c, right};
}
// 左側のノード全体の prod が check を満たすように切る
template <typename F>
pair<np, np> split_max_right_prod(np root, F check) {
if (!root) return {nullptr, nullptr};
assert(!root->p);
np c = find_max_right_prod(root, check);
if (!c) {
splay(root);
return {nullptr, root};
}
splay(c);
np right = c->r;
if (!right) return {c, nullptr};
right->p = nullptr;
c->r = nullptr;
c->update();
return {c, right};
}
template <typename F>
np find_max_right(np root, const F &check) {
// 最後に見つけた ok の点、最後に探索した点
np last_ok = nullptr, last = nullptr;
while (root) {
last = root;
root->prop();
if (check(root->x)) {
last_ok = root;
root = root->r;
} else {
root = root->l;
}
}
splay(last);
return last_ok;
}
template <typename F>
np find_max_right_prod(np root, const F &check) {
using Mono = typename Node::Monoid_X;
X prod = Mono::unit();
// 最後に見つけた ok の点、最後に探索した点
np last_ok = nullptr, last = nullptr;
while (root) {
last = root;
root->prop();
X lprod = prod;
if (root->l) lprod = Mono::op(lprod, root->l->prod);
lprod = Mono::op(lprod, root->x);
if (check(lprod)) {
prod = lprod;
last_ok = root;
root = root->r;
} else {
root = root->l;
}
}
splay(last);
return last_ok;
}
};
#line 2 "ds/splaytree/splaytree_basic.hpp"
namespace SplayTreeNodes {
template <typename S>
struct Node_Basic {
using value_type = S;
using operator_type = int;
using np = Node_Basic *;
np p, l, r;
bool rev;
S x;
u32 size;
static void new_node(np n, const S &x) {
n->p = n->l = n->r = nullptr;
n->x = x, n->size = 1, n->rev = 0;
}
void update() {
size = 1;
if (l) { size += l->size; }
if (r) { size += r->size; }
}
void prop() {
if (rev) {
if (l) { l->rev ^= 1, swap(l->l, l->r); }
if (r) { r->rev ^= 1, swap(r->l, r->r); }
rev = 0;
}
}
// update, prop 以外で呼ばれるものは、splay 後であることが想定されている。
// したがってその時点で update, prop 済であることを仮定してよい。
S get() { return x; }
void set(const S &xx) {
x = xx;
update();
}
void reverse() {
swap(l, r);
rev ^= 1;
}
};
template <typename S, int NODES>
using SplayTree_Basic = SplayTree<Node_Basic<S>, NODES>;
} // namespace SplayTreeNodes
using SplayTreeNodes::SplayTree_Basic;
#line 5 "test_atcoder/arc153b.test.cpp"
void solve() {
LL(H, W);
VEC(string, G, H);
SplayTree_Basic<int, 300'000> X;
vc<int> A(H), B(W);
iota(all(A), 0), iota(all(B), 0);
using np = decltype(X)::np;
np root_1 = X.new_node(A);
np root_2 = X.new_node(B);
LL(Q);
FOR(Q) {
LL(a, b);
X.reverse(root_1, 0, a);
X.reverse(root_1, a, H);
X.reverse(root_2, 0, b);
X.reverse(root_2, b, W);
}
A = X.get_all(root_1);
B = X.get_all(root_2);
vc<string> ANS(H, string(W, '?'));
FOR(i, H) FOR(j, W) { ANS[i][j] = G[A[i]][B[j]]; }
FOR(i, H) print(ANS[i]);
}
signed main() {
solve();
return 0;
}