結果
問題 | No.1323 うしらずSwap |
ユーザー | 👑 emthrm |
提出日時 | 2020-12-20 01:27:52 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
WA
|
実行時間 | - |
コード長 | 3,781 bytes |
コンパイル時間 | 3,079 ms |
コンパイル使用メモリ | 241,536 KB |
実行使用メモリ | 823,968 KB |
最終ジャッジ日時 | 2024-09-21 11:13:21 |
合計ジャッジ時間 | 15,341 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge4 |
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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
6,820 KB |
testcase_01 | AC | 2 ms
5,376 KB |
testcase_02 | AC | 2 ms
5,376 KB |
testcase_03 | AC | 2 ms
5,376 KB |
testcase_04 | AC | 2 ms
5,376 KB |
testcase_05 | AC | 2 ms
5,376 KB |
testcase_06 | AC | 2 ms
5,376 KB |
testcase_07 | WA | - |
testcase_08 | AC | 2 ms
5,376 KB |
testcase_09 | WA | - |
testcase_10 | AC | 2 ms
5,376 KB |
testcase_11 | WA | - |
testcase_12 | AC | 2 ms
5,376 KB |
testcase_13 | AC | 2 ms
5,376 KB |
testcase_14 | WA | - |
testcase_15 | WA | - |
testcase_16 | AC | 294 ms
102,656 KB |
testcase_17 | AC | 444 ms
102,400 KB |
testcase_18 | AC | 293 ms
102,656 KB |
testcase_19 | AC | 460 ms
102,400 KB |
testcase_20 | AC | 293 ms
102,400 KB |
testcase_21 | AC | 296 ms
102,400 KB |
testcase_22 | AC | 455 ms
102,400 KB |
testcase_23 | AC | 296 ms
102,400 KB |
testcase_24 | AC | 467 ms
102,272 KB |
testcase_25 | AC | 294 ms
102,400 KB |
testcase_26 | AC | 282 ms
110,164 KB |
testcase_27 | AC | 284 ms
140,216 KB |
testcase_28 | AC | 512 ms
102,784 KB |
testcase_29 | WA | - |
testcase_30 | WA | - |
testcase_31 | WA | - |
testcase_32 | WA | - |
testcase_33 | MLE | - |
testcase_34 | -- | - |
testcase_35 | -- | - |
testcase_36 | -- | - |
testcase_37 | -- | - |
testcase_38 | -- | - |
testcase_39 | -- | - |
testcase_40 | -- | - |
testcase_41 | -- | - |
testcase_42 | -- | - |
testcase_43 | -- | - |
testcase_44 | -- | - |
testcase_45 | -- | - |
testcase_46 | -- | - |
testcase_47 | -- | - |
testcase_48 | -- | - |
testcase_49 | -- | - |
testcase_50 | -- | - |
testcase_51 | -- | - |
testcase_52 | -- | - |
testcase_53 | -- | - |
testcase_54 | -- | - |
testcase_55 | -- | - |
testcase_56 | -- | - |
testcase_57 | -- | - |
testcase_58 | -- | - |
testcase_59 | -- | - |
testcase_60 | -- | - |
testcase_61 | -- | - |
ソースコード
#define _USE_MATH_DEFINES #include <bits/stdc++.h> using namespace std; #define FOR(i,m,n) for(int i=(m);i<(n);++i) #define REP(i,n) FOR(i,0,n) #define ALL(v) (v).begin(),(v).end() using ll = long long; constexpr int INF = 0x3f3f3f3f; constexpr long long LINF = 0x3f3f3f3f3f3f3f3fLL; constexpr double EPS = 1e-8; constexpr int MOD = 1000000007; // constexpr int MOD = 998244353; constexpr int dy[] = {1, 0, -1, 0}, dx[] = {0, -1, 0, 1}; constexpr int dy8[] = {1, 1, 0, -1, -1, -1, 0, 1}, dx8[] = {0, -1, -1, -1, 0, 1, 1, 1}; template <typename T, typename U> inline bool chmax(T &a, U b) { return a < b ? (a = b, true) : false; } template <typename T, typename U> inline bool chmin(T &a, U b) { return a > b ? (a = b, true) : false; } struct IOSetup { IOSetup() { std::cin.tie(nullptr); std::ios_base::sync_with_stdio(false); std::cout << fixed << setprecision(20); } } iosetup; int main() { int h, w, ra, ca, rb, cb; cin >> h >> w >> ra >> ca >> rb >> cb; --ra; --ca; --rb; --cb; vector<string> s(h); REP(i, h) cin >> s[i]; vector dist(h, vector(w, -1)); dist[ra][ca] = 0; vector prev(h, vector(w, make_pair(-1, -1))); queue<pair<int, int>> que({{ra, ca}}); while (!que.empty()) { auto [i, j] = que.front(); que.pop(); REP(k, 4) { int y = i + dy[k], x = j + dx[k]; if (dist[y][x] == -1 && s[y][x] == '.') { dist[y][x] = dist[i][j] + 1; prev[y][x] = {i, j}; que.emplace(y, x); } } } if (dist[rb][cb] == -1) { cout << "-1\n"; return 0; } int ans = INF; { int cnt = 0; REP(k, 4) { int y = ra + dy[k], x = ca + dx[k]; cnt += s[y][x] == '.'; } if (cnt >= 3) chmin(ans, dist[rb][cb] * 2 + 4); } { int cnt = 0; REP(k, 4) { int y = rb + dy[k], x = cb + dx[k]; cnt += s[y][x] == '.'; } if (cnt >= 3) chmin(ans, dist[rb][cb] * 2 + 4); } s[rb][cb] = 'b'; int cr = rb, cc = cb; while (cr != ra || cc != ca) { tie(cr, cc) = prev[cr][cc]; s[cr][cc] = '$'; } s[ra][ca] = 'a'; REP(i, h) REP(j, w) { if (s[i][j] == '$') { REP(k, 4) { int y = i + dy[k], x = j + dx[k]; if (s[y][x] == '.') chmin(ans, dist[rb][cb] * 2 + 2); } } } s[ra][ca] = s[rb][cb] = '$'; // REP(i, h) cout << s[i] << '\n'; vector bfs1(h, vector(w, -1)); vector bfs2(h, vector(w, vector<int>{})); vector<tuple<int, int, vector<int>>> que2; REP(i, h) REP(j, w) { if (s[i][j] == '$') { bfs1[i][j] = 0; bfs2[i][j] = {dist[i][j]}; que2.emplace_back(i, j, vector<int>{dist[i][j]}); } } while (!que2.empty()) { map<pair<int, int>, vector<int>> nx_mp; for (auto [i, j, ds] : que2) { int nx_dist = bfs1[i][j] + 1; REP(k, 4) { int y = i + dy[k], x = j + dx[k]; if (s[y][x] == '.') { if (bfs1[y][x] == -1) { bfs1[y][x] = nx_dist; bfs2[y][x] = ds; nx_mp[{y, x}] = ds; } else if (bfs1[y][x] == nx_dist) { for (int a : ds) for (int b : bfs2[y][x]) { if (a != b) { int tmp = bfs1[y][x] + nx_dist - abs(a - b); assert(tmp >= 0); chmin(ans, dist[rb][cb] * 2 + tmp); nx_mp[{y, x}].emplace_back(a); } } } else { for (int a : ds) for (int b : bfs2[y][x]) { if (a != b) { int tmp = bfs1[y][x] + nx_dist - abs(a - b); assert(tmp >= 0); chmin(ans, dist[rb][cb] * 2 + tmp); } } } } } } que2.clear(); for (auto [ij, ds] : nx_mp) que2.emplace_back(ij.first, ij.second, ds); } cout << (ans == INF ? -1 : ans) << '\n'; return 0; }