結果
問題 | No.1668 Grayscale |
ユーザー | keijak |
提出日時 | 2021-09-03 23:23:51 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
WA
|
実行時間 | - |
コード長 | 4,815 bytes |
コンパイル時間 | 2,200 ms |
コンパイル使用メモリ | 214,728 KB |
実行使用メモリ | 15,104 KB |
最終ジャッジ日時 | 2024-12-15 18:10:15 |
合計ジャッジ時間 | 4,211 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge1 |
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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 | WA | - |
testcase_01 | WA | - |
testcase_02 | AC | 1 ms
5,248 KB |
testcase_03 | AC | 2 ms
5,248 KB |
testcase_04 | WA | - |
testcase_05 | AC | 2 ms
5,248 KB |
testcase_06 | WA | - |
testcase_07 | WA | - |
testcase_08 | AC | 67 ms
14,976 KB |
testcase_09 | WA | - |
testcase_10 | WA | - |
testcase_11 | WA | - |
testcase_12 | WA | - |
testcase_13 | WA | - |
testcase_14 | WA | - |
testcase_15 | WA | - |
testcase_16 | WA | - |
testcase_17 | WA | - |
testcase_18 | AC | 2 ms
5,248 KB |
testcase_19 | WA | - |
testcase_20 | WA | - |
testcase_21 | WA | - |
testcase_22 | AC | 2 ms
5,248 KB |
testcase_23 | AC | 2 ms
5,248 KB |
ソースコード
#include <bits/stdc++.h> #define REP_(i, a_, b_, a, b, ...) \ for (int i = (a), END_##i = (b); i < END_##i; ++i) #define REP(i, ...) REP_(i, __VA_ARGS__, __VA_ARGS__, 0, __VA_ARGS__) #define ALL(x) std::begin(x), std::end(x) using i64 = long long; template<typename T, typename U> inline bool chmax(T &a, U b) { return a < b and ((a = std::move(b)), true); } template<typename T, typename U> inline bool chmin(T &a, U b) { return a > b and ((a = std::move(b)), true); } template<typename T> inline int ssize(const T &a) { return (int) std::size(a); } template<typename T> std::istream &operator>>(std::istream &is, std::vector<T> &a) { for (auto &x: a) is >> x; return is; } template<typename T, typename U> std::ostream &operator<<(std::ostream &os, const std::pair<T, U> &a) { return os << "(" << a.first << ", " << a.second << ")"; } template<typename Container> std::ostream &print_seq(const Container &a, std::string_view sep = " ", std::string_view ends = "\n", std::ostream &os = std::cout) { auto b = std::begin(a), e = std::end(a); for (auto it = std::begin(a); it != e; ++it) { if (it != b) os << sep; os << *it; } return os << ends; } template<typename T, typename = void> struct is_iterable : std::false_type {}; template<typename T> struct is_iterable<T, std::void_t<decltype(std::begin(std::declval<T>())), decltype(std::end(std::declval<T>()))>> : std::true_type { }; template<typename T, typename = std::enable_if_t< is_iterable<T>::value && !std::is_same<T, std::string_view>::value && !std::is_same<T, std::string>::value>> std::ostream &operator<<(std::ostream &os, const T &a) { return print_seq(a, ", ", "", (os << "{")) << "}"; } void print() { std::cout << "\n"; } template<class T> void print(const T &x) { std::cout << x << "\n"; } template<typename Head, typename... Tail> void print(const Head &head, Tail... tail) { std::cout << head << " "; print(tail...); } struct Input { template<typename T> operator T() const { T x; std::cin >> x; return x; } } in; #ifdef MY_DEBUG #include "debug_dump.hpp" #else #define DUMP(...) #endif using namespace std; // s |= t; // Merges two sets into their union. // The first argument will be updated to the result. template<typename T> std::set<T> &operator|=(std::set<T> &s, const std::set<T> &t) { s.insert(t.begin(), t.end()); return s; } template<typename T> std::set<T> &operator|=(std::set<T> &s, std::set<T> &&t) { if (s.size() >= t.size()) { s.merge(t); } else { t.merge(s); s.swap(t); } return s; } struct UnionFind { int n; mutable std::vector<int> parent; // positive: parent, negative: size std::set<int> roots_; std::vector<set<int>> agg_data_; explicit UnionFind(std::vector<set<int>> data) : n(data.size()), parent(data.size(), -1), agg_data_(move(data)) { for (int i = 0; i < n; ++i) roots_.insert(i); } bool unite(int x, int y) { x = find(x), y = find(y); if (x == y) return false; if (-parent[x] < -parent[y]) std::swap(x, y); parent[x] += parent[y]; parent[y] = x; agg_data_[x] |= agg_data_[y]; roots_.erase(y); return true; } int find(int v) const { if (parent[v] < 0) return v; return parent[v] = find(parent[v]); } int size(int v) const { return -parent[find(v)]; } bool same(int x, int y) const { return find(x) == find(y); } const std::set<int> &roots() const { return roots_; } }; auto solve() { const int H = in, W = in, N = in; vector C(H, vector(W, 0)); REP(i, H) { REP(j, W) { int c = in; C[i][j] = c; } } vector mi(H, vector(W, 1)); vector md(H, vector(W, 1)); REP(i, H) { REP(j, W) { if (i == 0 and j == 0) continue; optional<int> c1, c2; if (i > 0) { if (C[i][j] < C[i - 1][j]) { chmax(md[i][j], md[i - 1][j] + 1); } else if (C[i][j] > C[i - 1][j]) { chmax(mi[i][j], mi[i - 1][j] + 1); } else { chmax(md[i][j], md[i - 1][j]); chmax(mi[i][j], mi[i - 1][j]); } } if (j > 0) { if (C[i][j] < C[i][j - 1]) { chmax(md[i][j], md[i][j - 1] + 1); } else if (C[i][j] > C[i][j - 1]) { chmax(mi[i][j], mi[i][j - 1] + 1); } else { chmax(md[i][j], md[i][j - 1]); chmax(mi[i][j], mi[i][j - 1]); } } } } int ans = 1; REP(i, H) { REP(j, W) { chmax(ans, mi[i][j]); chmax(ans, md[i][j]); } } return ans; } int main() { ios_base::sync_with_stdio(false), cin.tie(nullptr); cout << std::fixed << std::setprecision(18); const int t = 1; REP(test_case, t) { auto ans = solve(); print(ans); } }