結果
問題 | No.2412 YOU Grow Bigger! |
ユーザー | poyon |
提出日時 | 2023-08-13 10:17:47 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
WA
|
実行時間 | - |
コード長 | 8,703 bytes |
コンパイル時間 | 2,457 ms |
コンパイル使用メモリ | 219,840 KB |
実行使用メモリ | 6,820 KB |
最終ジャッジ日時 | 2024-11-21 04:08:16 |
合計ジャッジ時間 | 3,593 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge2 |
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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
5,248 KB |
testcase_01 | AC | 2 ms
5,248 KB |
testcase_02 | WA | - |
testcase_03 | WA | - |
testcase_04 | WA | - |
testcase_05 | WA | - |
testcase_06 | WA | - |
testcase_07 | WA | - |
testcase_08 | WA | - |
testcase_09 | AC | 3 ms
5,248 KB |
testcase_10 | AC | 2 ms
5,248 KB |
testcase_11 | AC | 3 ms
5,248 KB |
testcase_12 | AC | 2 ms
5,248 KB |
testcase_13 | AC | 3 ms
5,248 KB |
testcase_14 | AC | 2 ms
5,248 KB |
testcase_15 | AC | 3 ms
5,248 KB |
testcase_16 | AC | 2 ms
5,248 KB |
testcase_17 | AC | 2 ms
5,248 KB |
testcase_18 | AC | 3 ms
5,248 KB |
testcase_19 | AC | 2 ms
5,248 KB |
testcase_20 | AC | 2 ms
5,248 KB |
testcase_21 | AC | 3 ms
5,248 KB |
testcase_22 | AC | 2 ms
5,248 KB |
testcase_23 | AC | 2 ms
5,248 KB |
testcase_24 | AC | 3 ms
5,248 KB |
testcase_25 | WA | - |
testcase_26 | AC | 2 ms
5,248 KB |
testcase_27 | AC | 2 ms
5,248 KB |
testcase_28 | AC | 3 ms
5,248 KB |
testcase_29 | AC | 3 ms
5,248 KB |
testcase_30 | AC | 1 ms
5,248 KB |
ソースコード
// この実装だと禁止区間(左上と右下)へのトゲ配置を許容してしまうが // そこに配置して ans=1 になるときは禁止区間以外への配置で ans=1 を達成できるので(未証明) // 最小値の出力だけでは問題にならない(が復元付きだと多分死ぬ) // // 3x3 を 1x1 に縮約している // clang-format off #ifdef _LOCAL #include <pch.hpp> #else #include <bits/stdc++.h> #define cerr if (false) cerr #define debug_bar #define debug(...) #define debug2(vv) #define debug3(vvv) #endif using namespace std; using ll = long long; using ld = long double; using str = string; using P = pair<ll,ll>; using VP = vector<P>; using VVP = vector<VP>; using VC = vector<char>; using VS = vector<string>; using VVS = vector<VS>; using VI = vector<int>; using VVI = vector<VI>; using VVVI = vector<VVI>; using VLL = vector<ll>; using VVLL = vector<VLL>; using VVVLL = vector<VVLL>; using VB = vector<bool>; using VVB = vector<VB>; using VVVB = vector<VVB>; using VD = vector<double>; using VVD = vector<VD>; using VVVD = vector<VVD>; #define FOR(i,l,r) for (ll i = (l); i < (r); ++i) #define RFOR(i,l,r) for (ll i = (r)-1; (l) <= i; --i) #define REP(i,n) FOR(i,0,n) #define RREP(i,n) RFOR(i,0,n) #define FORE(e,c) for (auto&& e : c) #define ALL(c) (c).begin(), (c).end() #define SORT(c) sort(ALL(c)) #define RSORT(c) sort((c).rbegin(), (c).rend()) #define MIN(c) *min_element(ALL(c)) #define MAX(c) *max_element(ALL(c)) #define COUNT(c,v) count(ALL(c),(v)) #define len(c) ((ll)(c).size()) #define BIT(b,i) (((b)>>(i)) & 1) #define PCNT(b) ((ll)__builtin_popcountll(b)) #define LB(c,v) distance((c).begin(), lower_bound(ALL(c), (v))) #define UB(c,v) distance((c).begin(), upper_bound(ALL(c), (v))) #define UQ(c) do { SORT(c); (c).erase(unique(ALL(c)), (c).end()); (c).shrink_to_fit(); } while (0) #define END(...) do { print(__VA_ARGS__); exit(0); } while (0) constexpr ld EPS = 1e-10; constexpr ld PI = acosl(-1.0); constexpr int inf = (1 << 30) - (1 << 15); // 1,073,709,056 constexpr ll INF = (1LL << 62) - (1LL << 31); // 4,611,686,016,279,904,256 template<class... T> void input(T&... a) { (cin >> ... >> a); } void print() { cout << '\n'; } template<class T> void print(const T& a) { cout << a << '\n'; } template<class P1, class P2> void print(const pair<P1, P2>& a) { cout << a.first << " " << a.second << '\n'; } template<class T, class... Ts> void print(const T& a, const Ts&... b) { cout << a; (cout << ... << (cout << ' ', b)); cout << '\n'; } template<class T> void cout_line(const vector<T>& ans, int l, int r) { for (int i = l; i < r; i++) { if (i != l) { cout << ' '; } cout << ans[i]; } cout << '\n'; } template<class T> void print(const vector<T>& a) { cout_line(a, 0, a.size()); } template<class S, class T> bool chmin(S& a, const T b) { if (b < a) { a = b; return 1; } return 0; } template<class S, class T> bool chmax(S& a, const T b) { if (a < b) { a = b; return 1; } return 0; } template<class T> T SUM(const vector<T>& A) { return accumulate(ALL(A), T(0)); } template<class T> vector<T> cumsum(const vector<T>& A, bool offset = false) { int N = A.size(); vector<T> S(N+1, 0); for (int i = 0; i < N; i++) { S[i+1] = S[i] + A[i]; } if (not offset) { S.erase(S.begin()); } return S; } template<class T> string to_binary(T x, int B = 0) { string s; while (x) { s += ('0' + (x & 1)); x >>= 1; } while ((int)s.size() < B) { s += '0'; } reverse(s.begin(), s.end()); return s; } template<class F> ll binary_search(const F& is_ok, ll ok, ll ng) { while (abs(ok - ng) > 1) { ll m = (ok + ng) / 2; (is_ok(m) ? ok : ng) = m; } return ok; } template<class F> double binary_search_real(const F& is_ok, double ok, double ng, int iter = 90) { for (int i = 0; i < iter; i++) { double m = (ok + ng) / 2; (is_ok(m) ? ok : ng) = m; } return ok; } template<class T> using PQ_max = priority_queue<T>; template<class T> using PQ_min = priority_queue<T, vector<T>, greater<T>>; template<class T> T pick(stack<T>& s) { assert(not s.empty()); T x = s.top(); s.pop(); return x; } template<class T> T pick(queue<T>& q) { assert(not q.empty()); T x = q.front(); q.pop(); return x; } template<class T> T pick_front(deque<T>& dq) { assert(not dq.empty()); T x = dq.front(); dq.pop_front(); return x; } template<class T> T pick_back(deque<T>& dq) { assert(not dq.empty()); T x = dq.back(); dq.pop_back(); return x; } template<class T> T pick(PQ_min<T>& pq) { assert(not pq.empty()); T x = pq.top(); pq.pop(); return x; } template<class T> T pick(PQ_max<T>& pq) { assert(not pq.empty()); T x = pq.top(); pq.pop(); return x; } template<class T> T pick(vector<T>& v) { assert(not v.empty()); T x = v.back(); v.pop_back(); return x; } int to_int(const char c) { if (islower(c)) { return (c - 'a'); } if (isupper(c)) { return (c - 'A'); } if (isdigit(c)) { return (c - '0'); } assert(false); } char to_a(const int i) { assert(0 <= i && i < 26); return ('a' + i); } char to_A(const int i) { assert(0 <= i && i < 26); return ('A' + i); } char to_d(const int i) { assert(0 <= i && i <= 9); return ('0' + i); } ll min(int a, ll b) { return min((ll)a, b); } ll min(ll a, int b) { return min(a, (ll)b); } ll max(int a, ll b) { return max((ll)a, b); } ll max(ll a, int b) { return max(a, (ll)b); } ll mod(ll x, ll m) { assert(m > 0); return (x % m + m) % m; } ll ceil(ll a, ll b) { if (b < 0) { return ceil(-a, -b); } assert(b > 0); return (a < 0 ? a / b : (a + b - 1) / b); } ll floor(ll a, ll b) { if (b < 0) { return floor(-a, -b); } assert(b > 0); return (a > 0 ? a / b : (a - b + 1) / b); } ll powint(ll x, ll n) { assert(n >= 0); if (n == 0) { return 1; }; ll res = powint(x, n>>1); res *= res; if (n & 1) { res *= x; } return res; } pair<ll,ll> divmod(ll a, ll b) { assert(b != 0); ll q = floor(a, b); return make_pair(q, a - q * b); } ll bitlen(ll b) { if (b <= 0) { return 0; } return (64LL - __builtin_clzll(b)); } ll digitlen(ll n) { assert(n >= 0); if (n == 0) { return 1; } ll sum = 0; while (n > 0) { sum++; n /= 10; } return sum; } ll msb(ll b) { return (b <= 0 ? -1 : (63 - __builtin_clzll(b))); } ll lsb(ll b) { return (b <= 0 ? -1 : __builtin_ctzll(b)); } // -------------------------------------------------------- // clang-format on int main() { ios::sync_with_stdio(false); cin.tie(nullptr); cout << fixed << setprecision(15); ll H, W; input(H, W); VS S(H); REP (i, H) { input(S[i]); } const vector<int> dh4 = {0, 1, 0, -1}; // 右,下,左,上 const vector<int> dw4 = {1, 0, -1, 0}; const vector<int> dh8 = {0, 1, 1, 1, 0, -1, -1, -1}; // 右,右下,下,左下,左,左上,上,右上 const vector<int> dw8 = {1, 1, 0, -1, -1, -1, 0, 1}; auto on_grid = [&](int h, int w) -> bool { return (0 <= h && h < H && 0 <= w && w < W); }; VS T(S); REP (h, H) { T[h][0] = T[h][W - 1] = '#'; } REP (w, W) { T[0][w] = T[H - 1][w] = '#'; } REP (h, H) { REP (w, W) { if (S[h][w] == '.') { continue; } T[h][w] = '#'; REP (d, 8) { int h2 = h + dh8[d]; int w2 = w + dw8[d]; if (not on_grid(h2, w2)) { continue; } T[h2][w2] = '#'; } } } auto on_grid2 = [&](int h, int w) -> bool { return on_grid(h, w) && not(h <= 2 && w <= 2) && not(H - 3 <= h && W - 3 <= w); }; vector<vector<int>> dist(H, vector<int>(W, inf)); deque<pair<int, int>> q; FOR (h, 3, H) { dist[h][0] = 0; q.emplace_front(h, 0); } REP (w, W - 3) { dist[H - 1][w] = 0; q.emplace_front(H - 1, w); } while (not q.empty()) { auto [h, w] = q.front(); q.pop_front(); for (int d = 0; d < 4; d++) { int h2 = h + dh4[d]; int w2 = w + dw4[d]; if (not on_grid(h2, w2)) { continue; } if (h == 0 && w == 0) { continue; } if (h == H - 1 && w == W - 1) { continue; } if (T[h2][w2] == '.') { continue; } if (chmin(dist[h2][w2], dist[h][w])) { q.emplace_front(h2, w2); } } for (int dh = -3; dh <= 3; dh++) { for (int dw = -3; dw <= 3; dw++) { if (abs(dh) + abs(dw) == 6) { continue; } int h2 = h + dh; int w2 = w + dw; if (not on_grid2(h2, w2)) { continue; } if (chmin(dist[h2][w2], dist[h][w] + 1)) { q.emplace_back(h2, w2); } } } } int ans = inf; FOR (w, 3, W) { chmin(ans, dist[0][w]); } REP (h, H - 3) { chmin(ans, dist[h][W - 1]); } print(ans); // REP (h, H) { debug(T[h]); } // REP (h, H) { debug(dist[h]); } return 0; }