結果
問題 | No.8069 Torn Documents |
ユーザー |
|
提出日時 | 2023-09-18 11:39:43 |
言語 | C++23 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 3 ms / 2,000 ms |
コード長 | 3,157 bytes |
コンパイル時間 | 4,075 ms |
コンパイル使用メモリ | 277,704 KB |
実行使用メモリ | 5,376 KB |
最終ジャッジ日時 | 2024-07-05 02:44:03 |
合計ジャッジ時間 | 5,503 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge5 |
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ファイルパターン | 結果 |
---|---|
other | AC * 28 |
ソースコード
#ifndef TEMPLATE_HPP#define TEMPLATE_HPP#pragma GCC optimize("Ofast")#pragma GCC optimize("unroll-loops")#include <bits/stdc++.h>#define impl_overload4(a, b, c, d, e, ...) e#define impl_overload5(a, b, c, d, e, f, ...) f#define impl_overload6(a, b, c, d, e, f, g, ...) g#define impl_overload7(a, b, c, d, e, f, g, h, ...) h// clang-format off#define impl_rep4(i, a, b, c) for (int i = (a); i < (b); i += (c))#define impl_rep3(i, a, b) impl_rep4(i, a, b, 1)#define impl_rep2(i, n) impl_rep3(i, 0, n)#define impl_rep1(n) for (int _ = 0; _ < (n); ++_)#define rep(...) impl_overload4(__VA_ARGS__, impl_rep4, impl_rep3, impl_rep2, impl_rep1)(__VA_ARGS__)#define impl_rrep4(i, a, b, c) for (int i = (b) - 1; i >= (a); i -= (c))#define impl_rrep3(i, a, b) impl_rrep4(i, a, b, 1)#define impl_rrep2(i, n) impl_rrep3(i, 0, n)#define rrep(...) impl_overload4(__VA_ARGS__, impl_rrep4, impl_rrep3, impl_rrep2)(__VA_ARGS__)// clang-format on#define all(v) std::begin(v), std::end(v)template<typename T>constexpr int bit(T x, unsigned int k) {return (x >> k) & 1;}template<typename T>constexpr bool chmax(T& a, const T& b) {return a < b ? a = b, true : false;}template<typename T>constexpr bool chmin(T& a, const T& b) {return a > b ? a = b, true : false;}void yesno(bool b) {std::cout << (b ? "Yes" : "No") << "\n";}void yes() {yesno(true);}void no() {yesno(false);}struct Setup {Setup() {std::ios::sync_with_stdio(false);std::cin.tie(nullptr);std::cout << std::fixed << std::setprecision(11);}} setup;#ifdef LOCAL#include "template_local.hpp"#else#define show(...) ((void)0)#endifusing uint = unsigned int;using lint = long long;using ulint = unsigned long long;using namespace std;#endif // TEMPLATE_HPPint main() {int r, c;string s;cin >> r >> c >> s;// delete redundant moves (e.g., LRLRLR -> R){int f[128];f['U'] = f['D'] = 0;f['L'] = f['R'] = 1;string t;for (char c: s) {if (not t.empty() and f[t.back()] == f[c]) {t.pop_back();}t += c;}s = t;}int n = size(s);if (count(all(s), 'U') == 0 or count(all(s), 'L') == 0) {cout << -1 << endl;return 0;}if (s.substr(n - 2) == "DR" or s.substr(n - 2) == "RD") {cout << -1 << endl;return 0;}vector<pair<int, int>> ans;int idx = max(s.find_last_of('U'), s.find_last_of('L'));ans.emplace_back(r, c + 1);ans.emplace_back(r + 1, c);if (s[idx] == 'U') {ans.emplace_back(r - 1, c);ans.emplace_back(r + 1, 1);ans.emplace_back(r + 2, 0);ans.emplace_back(0, 1);}else { // s[idx] == 'L'ans.emplace_back(r, c - 1);ans.emplace_back(1, c + 1);ans.emplace_back(0, c + 2);ans.emplace_back(1, 0);}sort(all(ans));ans.erase(unique(all(ans)), end(ans));cout << size(ans) << "\n";for (auto [x, y]: ans) {cout << x << " " << y << "\n";}return 0;}