結果
問題 | No.1434 Make Maze |
ユーザー | sten_san |
提出日時 | 2023-04-22 18:22:53 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 26 ms / 2,000 ms |
コード長 | 6,312 bytes |
コンパイル時間 | 2,950 ms |
コンパイル使用メモリ | 225,912 KB |
実行使用メモリ | 12,184 KB |
最終ジャッジ日時 | 2024-11-07 06:28:18 |
合計ジャッジ時間 | 7,964 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge3 |
(要ログイン)
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
5,248 KB |
testcase_01 | AC | 2 ms
5,248 KB |
testcase_02 | AC | 26 ms
12,176 KB |
testcase_03 | AC | 25 ms
12,184 KB |
testcase_04 | AC | 2 ms
5,248 KB |
testcase_05 | AC | 2 ms
5,248 KB |
testcase_06 | AC | 2 ms
5,248 KB |
testcase_07 | AC | 2 ms
5,248 KB |
testcase_08 | AC | 2 ms
5,248 KB |
testcase_09 | AC | 2 ms
5,248 KB |
testcase_10 | AC | 2 ms
5,248 KB |
testcase_11 | AC | 2 ms
5,248 KB |
testcase_12 | AC | 3 ms
5,248 KB |
testcase_13 | AC | 2 ms
5,248 KB |
testcase_14 | AC | 3 ms
5,248 KB |
testcase_15 | AC | 7 ms
5,248 KB |
testcase_16 | AC | 4 ms
5,248 KB |
testcase_17 | AC | 3 ms
5,248 KB |
testcase_18 | AC | 5 ms
5,248 KB |
testcase_19 | AC | 12 ms
6,900 KB |
testcase_20 | AC | 2 ms
5,248 KB |
testcase_21 | AC | 2 ms
5,248 KB |
testcase_22 | AC | 2 ms
5,248 KB |
testcase_23 | AC | 2 ms
5,248 KB |
testcase_24 | AC | 12 ms
7,136 KB |
testcase_25 | AC | 15 ms
8,804 KB |
testcase_26 | AC | 3 ms
5,248 KB |
testcase_27 | AC | 13 ms
7,104 KB |
testcase_28 | AC | 4 ms
5,248 KB |
testcase_29 | AC | 2 ms
5,248 KB |
testcase_30 | AC | 5 ms
5,248 KB |
testcase_31 | AC | 5 ms
5,248 KB |
ソースコード
#include <bits/stdc++.h> using namespace std; struct iofast_t { iofast_t() { ios::sync_with_stdio(false); cin.tie(nullptr); } } iofast; struct uns_t {} uns; template <typename Element, typename Head, typename ...Args> auto vec(Element init, Head arg, Args ...args) { if constexpr (sizeof...(Args) == 0) return vector(arg, init); else return vector(arg, vec(init, args...)); } template <typename Element, typename Head, typename ...Args> auto vec(uns_t, Head arg, Args ...args) { return vec(Element(), arg, args...); } template <typename Container> auto distance(const Container &c, decltype(begin(c)) iter) { return distance(begin(c), iter); } template <typename RIter, typename Compare = less<typename iterator_traits<RIter>::value_type>> auto isort(RIter first, RIter last, Compare comp = Compare()) { vector<int> i(distance(first, last)); iota(begin(i), end(i), 0); sort(begin(i), end(i), [&](auto x, auto y) { return comp(*(first + x), *(first + y)); }); return i; } template <typename, template <typename> typename, typename = void_t<>> struct detect : false_type {}; template <typename T, template <typename> typename Check> struct detect<T, Check, void_t<Check<T>>> : true_type {}; template <typename T, template <typename> typename Check> constexpr inline bool detect_v = detect<T, Check>::value; template <typename T> using has_member_sort = decltype(declval<T>().sort()); template <typename Container, typename Compare = less<typename Container::value_type>> auto sorted(Container c, Compare comp = Compare()) { if constexpr (detect_v<Container, has_member_sort>) { c.sort(comp); return c; } else { sort(begin(c), end(c), comp); return c; } } template <typename Container, typename Compare = equal_to<typename Container::value_type>> auto uniqued(Container c, Compare comp = Compare()) { c.erase(unique(begin(c), end(c), comp), end(c)); return c; } template <typename T, typename Compare = less<T>> T &chmin(T &l, T r, Compare &&f = less<T>()) { return l = min(l, r, f); } template <typename T, typename Compare = less<T>> T &chmax(T &l, T r, Compare &&f = less<T>()) { return l = max(l, r, f); } template <typename F> constexpr auto fix(F &&f) noexcept { return [f = std::tuple<F>(std::forward<F>(f))](auto &&...args) mutable { return std::get<0>(f)(fix(std::get<0>(f)), std::forward<decltype(args)>(args)...); }; } #include <atcoder/dsu> int main() { constexpr int step[4][2] = { { 1, 0 }, { 0, 1 }, { -1, 0 }, { 0, -1 } }; int h, w, x; cin >> h >> w >> x; if (x < h + w - 2 || x % 4 != (h + w - 2) % 4) { cout << -1 << endl; return 0; } const int max = [&]() { const int p = (h + 1) / 2 * (w + 1) / 2; if (h % 4 == 3 && w % 4 == 3) { return (p - 1) * 2 - 1; } return p * 2 - 1; }(); if (max <= x) { cout << -1 << endl; return 0; } auto path = fix([](auto path, int h, int w, int x) -> vector<tuple<int, int>> { if (h % 2 == 0 && w % 2 != 0) { auto f = path(w, h, x); for (auto &[y, x] : f) { swap(y, x); } return f; } auto max_path = [](int h, int w) -> vector<tuple<int, int>> { auto p = vec(make_tuple(0, 0), 0); for (int i = 0; i < h - (h % 2 == 0) * 2; ++i) { for (int j = 0; j < w; ++j) { if (i % 2 == 0) { p.emplace_back(i, j); } if (i % 2 == 1) { p.emplace_back(i, w - j - 1); } } } if (h % 2 == 1) { return p; } p.emplace_back(h - 2, 0); for (int i = 1; i < w; ++i) { for (int j = 0; j < 2; ++j) { if (i % 2 == 0) { p.emplace_back(h - 1 - j, i); } if (i % 2 == 1) { p.emplace_back(h - 2 + j, i); } } } return p; }; auto f = max_path(h, w); auto g = vec(make_tuple(0, 0), 0); auto vis = vec<bool>(false, h, w); int ly = -1, lx = -1; for (auto [fy, fx] : f) { int d = h + w - 2 - fy - fx; g.emplace_back(fy, fx); vis[fy][fx] = true; if (x == d) { tie(ly, lx) = { fy, fx }; break; } --x; } if (ly + 1 < h && !vis[ly + 1][lx]) { while (ly + 1 < h) { g.emplace_back(++ly, lx); } } if (lx + 1 < w && !vis[ly][lx + 1]) { while (lx + 1 < w) { g.emplace_back(ly, ++lx); } } while (ly + 1 < h) { g.emplace_back(++ly, lx); } while (lx + 1 < w) { g.emplace_back(ly, ++lx); } return g; }); atcoder::dsu dsu(h * w); auto ans = vec(string(w, '#'), h); auto p = path((h + 1) / 2, (w + 1) / 2, x / 2); int py = -1, px = -1; for (auto [y, x] : p) { y *= 2; x *= 2; ans[y][x] = '.'; dsu.merge(0, y * w + x); if (0 <= min(py, px)) { int dy = (y - py) / 2, dx = (x - px) / 2; int ny = py + dy, nx = px + dx; ans[ny][nx] = '.'; dsu.merge(0, ny * w + nx); } tie(py, px) = { y, x }; } for (int i = 0; i < h; i += 2) { for (int j = 0; j < w; j += 2) { ans[i][j] = '.'; for (auto [dy, dx] : step) { int ny = i + dy * 2, nx = j + dx * 2; if (min(ny, nx) < 0 || h <= ny || w <= nx) { continue; } if (!dsu.same(i * w + j, ny * w + nx)) { dsu.merge(i * w + j, ny * w + nx); ans[ny][nx] = ans[ny - dy][nx - dx] = '.'; } } } } for (auto &s : ans) { cout << s << '\n'; } cout << flush; }