結果
問題 | No.2639 Longest Increasing Walk |
ユーザー | Re0denX |
提出日時 | 2024-02-22 23:23:19 |
言語 | C++23 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 40 ms / 2,000 ms |
コード長 | 6,528 bytes |
コンパイル時間 | 3,333 ms |
コンパイル使用メモリ | 260,408 KB |
実行使用メモリ | 6,820 KB |
最終ジャッジ日時 | 2024-09-29 04:29:58 |
合計ジャッジ時間 | 4,760 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge3 |
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テストケース
テストケース表示入力 | 結果 | 実行時間 実行使用メモリ |
---|---|---|
testcase_00 | AC | 2 ms
6,816 KB |
testcase_01 | AC | 2 ms
6,816 KB |
testcase_02 | AC | 2 ms
6,816 KB |
testcase_03 | AC | 2 ms
6,820 KB |
testcase_04 | AC | 39 ms
6,820 KB |
testcase_05 | AC | 38 ms
6,820 KB |
testcase_06 | AC | 37 ms
6,816 KB |
testcase_07 | AC | 40 ms
6,816 KB |
testcase_08 | AC | 37 ms
6,820 KB |
testcase_09 | AC | 40 ms
6,820 KB |
testcase_10 | AC | 25 ms
6,820 KB |
testcase_11 | AC | 23 ms
6,816 KB |
testcase_12 | AC | 5 ms
6,816 KB |
testcase_13 | AC | 26 ms
6,820 KB |
testcase_14 | AC | 16 ms
6,816 KB |
testcase_15 | AC | 2 ms
6,816 KB |
testcase_16 | AC | 2 ms
6,820 KB |
testcase_17 | AC | 15 ms
6,820 KB |
testcase_18 | AC | 19 ms
6,816 KB |
testcase_19 | AC | 7 ms
6,816 KB |
testcase_20 | AC | 13 ms
6,820 KB |
testcase_21 | AC | 23 ms
6,816 KB |
testcase_22 | AC | 9 ms
6,820 KB |
testcase_23 | AC | 2 ms
6,816 KB |
testcase_24 | AC | 2 ms
6,820 KB |
testcase_25 | AC | 2 ms
6,816 KB |
testcase_26 | AC | 2 ms
6,816 KB |
testcase_27 | AC | 2 ms
6,820 KB |
testcase_28 | AC | 2 ms
6,820 KB |
testcase_29 | AC | 2 ms
6,820 KB |
testcase_30 | AC | 2 ms
6,816 KB |
testcase_31 | AC | 2 ms
6,820 KB |
testcase_32 | AC | 2 ms
6,816 KB |
ソースコード
#include <bits/stdc++.h> using namespace std; inline namespace IO { #define SFINAE(x, ...) \ template <class, class = void> struct x : std::false_type {}; \ template <class T> struct x<T, std::void_t<__VA_ARGS__>> : std::true_type {} SFINAE(DefaultI, decltype(std::cin >> std::declval<T &>())); SFINAE(DefaultO, decltype(std::cout << std::declval<T &>())); SFINAE(IsTuple, typename std::tuple_size<T>::type); SFINAE(Iterable, decltype(std::begin(std::declval<T>()))); template <auto &is> struct Reader { template <class T> void Impl(T &t) { if constexpr (DefaultI<T>::value) is >> t; else if constexpr (Iterable<T>::value) { for (auto &x : t) Impl(x); } else if constexpr (IsTuple<T>::value) { std::apply([this](auto &...args) { (Impl(args), ...); }, t); } else static_assert(IsTuple<T>::value, "No matching type for read"); } template <class... Ts> void read(Ts &...ts) { ((Impl(ts)), ...); } }; template <class... Ts> void re(Ts &...ts) { Reader<cin>{}.read(ts...); } #define def(t, args...) \ t args; \ re(args); template <auto &os, bool debug, bool print_nd> struct Writer { string comma() const { return debug ? "," : ""; } template <class T> constexpr char Space(const T &) const { return print_nd && (Iterable<T>::value or IsTuple<T>::value) ? '\n' : ' '; } template <class T> void Impl(T const &t) const { if constexpr (DefaultO<T>::value) os << t; else if constexpr (Iterable<T>::value) { if (debug) os << '{'; int i = 0; for (auto &&x : t) ((i++) ? (os << comma() << Space(x), Impl(x)) : Impl(x)); if (debug) os << '}'; } else if constexpr (IsTuple<T>::value) { if (debug) os << '('; std::apply( [this](auto const &...args) { int i = 0; (((i++) ? (os << comma() << " ", Impl(args)) : Impl(args)), ...); }, t); if (debug) os << ')'; } else static_assert(IsTuple<T>::value, "No matching type for print"); } template <class T> void ImplWrapper(T const &t) const { if (debug) os << "\033[0;31m"; Impl(t); if (debug) os << "\033[0m"; } template <class... Ts> void print(Ts const &...ts) const { ((Impl(ts)), ...); } template <class F, class... Ts> void print_with_sep(const std::string &sep, F const &f, Ts const &...ts) const { ImplWrapper(f), ((os << sep, ImplWrapper(ts)), ...), os << '\n'; } void print_with_sep(const std::string &) const { os << '\n'; } }; template <class... Ts> void pr(Ts const &...ts) { Writer<cout, false, true>{}.print(ts...); } template <class... Ts> void ps(Ts const &...ts) { Writer<cout, false, true>{}.print_with_sep(" ", ts...); } } // namespace IO inline namespace Debug { template <typename... Args> void err(Args... args) { Writer<cerr, true, false>{}.print_with_sep(" | ", args...); } template <typename... Args> void errn(Args... args) { Writer<cerr, true, true>{}.print_with_sep(" | ", args...); } void err_prefix(string func, int line, string args) { cerr << "\033[0;31m\u001b[1mDEBUG\033[0m" << " | " << "\u001b[34m" << func << "\033[0m" << ":" << "\u001b[34m" << line << "\033[0m" << " - " << "[" << args << "] = "; } #ifdef LOCAL #define dbg(args...) err_prefix(__FUNCTION__, __LINE__, #args), err(args) #define dbgn(args...) err_prefix(__FUNCTION__, __LINE__, #args), errn(args) #else #define dbg(...) #define dbgn(args...) #endif const auto beg_time = std::chrono::high_resolution_clock::now(); // https://stackoverflow.com/questions/47980498/accurate-c-c-clock-on-a-multi-core-processor-with-auto-overclock?noredirect=1&lq=1 double time_elapsed() { return chrono::duration<double>(std::chrono::high_resolution_clock::now() - beg_time) .count(); } } // namespace Debug inline namespace FileIO { void setIn(string s) { freopen(s.c_str(), "r", stdin); } void setOut(string s) { freopen(s.c_str(), "w", stdout); } void setIO(string s = "") { cin.tie(0)->sync_with_stdio(0); // unsync C / C++ I/O streams cout << fixed << setprecision(12); // cin.exceptions(cin.failbit); // throws exception when do smth illegal // ex. try to read letter into int if ((int)(s.size())) setIn(s + ".in"), setOut(s + ".out"); // for old USACO } } // namespace FileIO #ifdef LOCAL #include <debug.h> #else #define debug(...) 42 #endif // LOCAL struct ChronoTimer { std::chrono::high_resolution_clock::time_point st; ChronoTimer() { reset(); } void reset() { st = std::chrono::high_resolution_clock::now(); } std::chrono::milliseconds::rep elapsed() { auto ed = std::chrono::high_resolution_clock::now(); return std::chrono::duration_cast<std::chrono::milliseconds>(ed - st) .count(); } }; constexpr bool TEST = false; namespace std { template <class Fun> class y_combinator_result { Fun fun_; public: template <class T> explicit y_combinator_result(T &&fun) : fun_(std::forward<T>(fun)) {} template <class... Args> decltype(auto) operator()(Args &&...args) { return fun_(std::ref(*this), std::forward<Args>(args)...); } }; template <class Fun> decltype(auto) y_combinator(Fun &&fun) { return y_combinator_result<std::decay_t<Fun>>(std::forward<Fun>(fun)); } } // namespace std void run_case(int tc) { using ll = int64_t; def(int, N, M); vector A(N, vector<int>(M)); re(A); vector dp(N, vector<ll>(M, -1)); constexpr int dir[4][2] = {1, 0, 0, 1, -1, 0, 0, -1}; ll ret = 0; for (int i = 0; i < N; i++) for (int j = 0; j < M; j++) { dp[i][j] = y_combinator([&](auto self, int u, int v) -> ll { if (~dp[u][v]) { return dp[u][v]; } ll ans = 0; for (int k = 0; k < 4; k++) { int ii = u + dir[k][0], jj = v + dir[k][1]; if (ii < 0 || jj < 0 || ii >= N || jj >= M) continue; if (A[ii][jj] < A[u][v]) ans = max(ans, self(ii, jj)); } return dp[u][v] = ans + 1; })(i, j); ret = max(ret, dp[i][j]); } ps(ret); } int main(int, char **) { #ifdef LOCAL ChronoTimer chrono; setIO("../src/prob"); #else setIO(); #endif int T = 1; if constexpr (TEST) re(T); for (int tc = 1; tc <= T; tc++) run_case(tc); #ifdef LOCAL ps("\nRunning Time:", chrono.elapsed(), "ms"); #endif }