結果
問題 |
No.3121 Prime Dance
|
ユーザー |
|
提出日時 | 2025-03-24 16:59:01 |
言語 | C++23 (gcc 13.3.0 + boost 1.87.0) |
結果 |
WA
(最新)
AC
(最初)
|
実行時間 | - |
コード長 | 3,578 bytes |
コンパイル時間 | 3,577 ms |
コンパイル使用メモリ | 294,960 KB |
実行使用メモリ | 7,844 KB |
最終ジャッジ日時 | 2025-04-08 23:39:27 |
合計ジャッジ時間 | 6,549 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 * 19 WA * 4 |
コンパイルメッセージ
main.cpp: In function ‘int main()’: main.cpp:127:36: warning: narrowing conversion of ‘k’ from ‘ll’ {aka ‘long long int’} to ‘int’ [-Wnarrowing] 127 | pq.push(ai4{d, x2, y2, k}); | ^
ソースコード
#include <bits/stdc++.h> using namespace std; using ll = long long; using pii = pair<int, int>; using pll = pair<ll, ll>; using vi = vector<int>; using vl = vector<ll>; #define rep3(i, a, b, c) for (ll i = (a); i < (b); i += (c)) #define rep2(i, a, b) rep3(i, a, b, 1) #define rep1(i, n) rep2(i, 0, n) #define rep0(n) rep1(aaaaa, n) #define ov4(a, b, c, d, name, ...) name #define rep(...) ov4(__VA_ARGS__, rep3, rep2, rep1, rep0)(__VA_ARGS__) #define per(i, a, b) for (ll i = (a) - 1; i >= (b); i--) #define fore(e, v) for (auto&& e : v) #define all(a) begin(a), end(a) #define sz(a) (int)(size(a)) #define lb(v, x) (lower_bound(all(v), x) - begin(v)) #define eb emplace_back template <typename T, typename S> bool chmin(T& a, const S& b) { return a > b ? a = b, 1 : 0; } template <typename T, typename S> bool chmax(T& a, const S& b) { return a < b ? a = b, 1 : 0; } const int INF = 1e9 + 100; const ll INFL = 3e18 + 100; #define i128 __int128_t struct _ { _() { cin.tie(0)->sync_with_stdio(0), cout.tie(0); } } __; const int MAX_P = 100000; int main() { int H, W; cin >> H >> W; using ai2 = array<int, 2>; ai2 S, G; cin >> S[0] >> S[1]; --S[0], --S[1]; cin >> G[0] >> G[1]; --G[0], --G[1]; vector<string> C(H); rep(i, H) cin >> C[i]; if (S[0] > G[0]) { S[0] = H - 1 - S[0], G[0] = H - 1 - G[0]; reverse(all(C)); } if (S[1] > G[1]) { S[1] = W - 1 - S[1], G[1] = W - 1 - G[1]; fore(i, C) reverse(all(i)); } vector p(MAX_P, true); p[0] = p[1] = 0; rep(i, 2, MAX_P) { if (!p[i]) continue; rep(j, i * i, MAX_P, i) p[j] = 0; } vi pH, pW; rep(i, MAX_P - (G[0] - S[0])) { if (p[i] && p[i + (G[0] - S[0])]) pH.eb(i); } rep(i, MAX_P - (G[1] - S[1])) { if (p[i] && p[i + (G[1] - S[1])]) pW.eb(i); } // 操作dを数える vector dist(H, vector(W, ai2{(int)1e9, (int)1e9})); dist[S[0]][S[1]][0] = 0; using ai4 = array<int, 4>; priority_queue<ai4, vector<ai4>, greater<ai4>> pq; int ans = 1e9; auto move_ok = [&](int x, int y) { if (x < 0 || x >= H || y < 0 || y >= W) return false; return C[x][y] != '#'; }; pq.push(ai4{0, S[0], S[1], 0}); rep(b, H * W) { while (pq.size()) { auto [d, x, y, f] = pq.top(); pq.pop(); if (dist[x][y][f] != d) continue; { // a int x2 = x + 1, y2 = y; if (move_ok(x2, y2) && dist[x2][y2][f] > d) { dist[x2][y2][f] = d; pq.push(ai4{d, x2, y2, f}); } } { // c int x2 = x, y2 = y + 1; if (move_ok(x2, y2) && dist[x2][y2][f] > d) { dist[x2][y2][f] = d; pq.push(ai4{d, x2, y2, f}); } } { // d int x2 = x, y2 = y - 1; if (move_ok(x2, y2) && dist[x2][y2][1] > d + 1) { dist[x2][y2][1] = d + 1; pq.push(ai4{d + 1, x2, y2, 1}); } } } if (b > 0) { int h = lb(pH, b), w = lb(pW, dist[G[0]][G[1]][1]); if (h < sz(pH) && w < sz(pW)) chmin(ans, pH[h] * 2 + (G[0] - S[0]) + pW[w] * 2 + (G[1] - S[1])); } // b // cerr<<"B: "<<b<<endl; rep(i, 1, H) { rep(j, W) { if (C[i][j] == '#') continue; rep(k, 2) { int d = dist[i][j][k]; int x2 = i - 1, y2 = j; if (move_ok(x2, y2)) { dist[x2][y2][k] = d; pq.push(ai4{d, x2, y2, k}); // cerr<<"("<<x2<<','<<y2<<','<<k<<") = "<<d<<endl; } } } } rep(i, W) { rep(k, 2) dist[H - 1][i][k] = 1e9; } } cout << (ans == 1e9 ? -1 : ans) << '\n'; }