結果
| 問題 | No.5022 XOR Printer |
| コンテスト | |
| ユーザー |
risujiroh
|
| 提出日時 | 2025-07-26 15:58:29 |
| 言語 | C++23 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 2 ms / 2,000 ms |
| コード長 | 4,492 bytes |
| コンパイル時間 | 3,786 ms |
| コンパイル使用メモリ | 300,132 KB |
| 実行使用メモリ | 7,716 KB |
| スコア | 5,146,397,359 |
| 最終ジャッジ日時 | 2025-07-26 15:58:35 |
| 合計ジャッジ時間 | 5,852 ms |
|
ジャッジサーバーID (参考情報) |
judge4 / judge3 |
| 純コード判定しない問題か言語 |
(要ログイン)
| ファイルパターン | 結果 |
|---|---|
| other | AC * 50 |
ソースコード
#if __INCLUDE_LEVEL__ == 0
#include __BASE_FILE__
int N;
int T;
void Solve() {
IN(N, T);
vector<int> A(N * N);
IN(A);
vector<int> order;
{
order.reserve(N * N);
assert(N % 2 == 0);
for (int i : Rep(0, N)) {
if (i % 2 == 0) {
for (int j : Rep(1, N)) {
order.push_back(i * N + j);
}
} else {
for (int j : Rev(Rep(1, N))) {
order.push_back(i * N + j);
}
}
}
for (int i : Rev(Rep(0, N))) {
order.push_back(i * N);
}
assert(Sz(order) == N * N);
}
auto get_dist = [&](int x, int y) -> int {
assert(0 <= x && x < N * N);
assert(0 <= y && y < N * N);
int xi = x / N, xj = x % N;
int yi = y / N, yj = y % N;
return abs(yi - xi) + abs(yj - xj);
};
auto get_moves = [&](int x, int y) -> string {
assert(0 <= x && x < N * N);
assert(0 <= y && y < N * N);
int xi = x / N, xj = x % N;
int yi = y / N, yj = y % N;
string moves;
moves.reserve(abs(yi - xi) + abs(yj - xj));
for (; xj < yj; ++xj) moves += 'R';
for (; xi < yi; ++xi) moves += 'D';
for (; xj > yj; --xj) moves += 'L';
for (; xi > yi; --xi) moves += 'U';
return moves;
};
int cur_x = 0;
int cur_s = 0;
int cur_turn = 0;
auto move_to = [&](int x) {
assert(0 <= cur_x && cur_x < N * N);
assert(0 <= x && x < N * N);
for (char c : get_moves(cur_x, x)) {
OUT(c);
++cur_turn;
}
cur_x = x;
};
auto copy = [&] {
assert(0 <= cur_x && cur_x < N * N);
OUT('C');
++cur_turn;
cur_s ^= A[cur_x];
};
auto write = [&] {
assert(0 <= cur_x && cur_x < N * N);
OUT('W');
++cur_turn;
A[cur_x] ^= cur_s;
};
vector<int> pivot_x(20, -1);
for (int k : Rev(Rep(0, 20))) {
int& P = pivot_x[k];
for (int x : Rep(0, N * N)) {
if ((A[x] >> k) == 1) {
if (P == -1 || get_dist(cur_x, x) < get_dist(cur_x, P)) {
P = x;
}
}
}
assert(P != -1);
move_to(P);
copy();
ranges::rotate(order, ranges::find(order, P));
bool should_break = false;
for (int x : order | views::drop(1)) {
auto estimate = [&, order] mutable {
int ret = cur_turn;
int tx = cur_x;
ret += get_dist(exchange(tx, x), x) + 1;
ret += get_dist(exchange(tx, P), P) + 1;
int P = pivot_x.back();
ret += get_dist(exchange(tx, P), P) + 1;
ranges::rotate(order, ranges::find(order, P));
for (int y : order | views::drop(1)) {
ret += get_dist(exchange(tx, y), y) + 1;
}
P = pivot_x.end()[-2];
ret += get_dist(exchange(tx, P), P) + 2;
return ret;
};
int nA = A[x] ^ cur_s;
if (x == pivot_x.back() ? nA > A[x] : nA < A[x]) {
if (k < 15 && estimate() > T) {
should_break = true;
break;
}
move_to(x);
write();
}
}
move_to(P);
copy();
assert(cur_s == 0);
if (should_break) {
break;
}
}
{
int P = pivot_x.back();
move_to(P);
copy();
ranges::rotate(order, ranges::find(order, P));
for (int x : order | views::drop(1)) {
move_to(x);
write();
}
P = pivot_x.end()[-2];
move_to(P);
copy();
write();
}
}
int main() {
ios::sync_with_stdio(false);
cin.tie(nullptr);
Solve();
}
#elif __INCLUDE_LEVEL__ == 1
#include <bits/stdc++.h>
template <class T> concept MyRange = std::ranges::range<T> && !std::convertible_to<T, std::string_view>;
template <class T> concept MyTuple = std::__is_tuple_like<T>::value && !MyRange<T>;
namespace std {
istream& operator>>(istream& is, MyRange auto&& r) {
for (auto&& e : r) is >> e;
return is;
}
istream& operator>>(istream& is, MyTuple auto&& t) {
apply([&](auto&... xs) { (is >> ... >> xs); }, t);
return is;
}
ostream& operator<<(ostream& os, MyRange auto&& r) {
auto sep = "";
for (auto&& e : r) os << exchange(sep, " ") << e;
return os;
}
ostream& operator<<(ostream& os, MyTuple auto&& t) {
auto sep = "";
apply([&](auto&... xs) { ((os << exchange(sep, " ") << xs), ...); }, t);
return os;
}
} // namespace std
using namespace std;
#define Rev views::reverse
#define Rep(...) [](int l, int r) { return views::iota(min(l, r), r); }(__VA_ARGS__)
#define Sz(r) int(size(r))
#define IN(...) (cin >> forward_as_tuple(__VA_ARGS__))
#define OUT(...) (cout << forward_as_tuple(__VA_ARGS__) << '\n')
#endif // __INCLUDE_LEVEL__ == 1
risujiroh