結果
問題 |
No.3199 Key-Door Grid
|
ユーザー |
|
提出日時 | 2025-07-11 22:20:29 |
言語 | C++23 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 125 ms / 3,000 ms |
コード長 | 1,739 bytes |
コンパイル時間 | 3,977 ms |
コンパイル使用メモリ | 288,724 KB |
実行使用メモリ | 21,632 KB |
最終ジャッジ日時 | 2025-07-11 22:20:36 |
合計ジャッジ時間 | 6,453 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge5 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 37 |
コンパイルメッセージ
main.cpp: In function ‘int main()’: main.cpp:53:19: warning: ‘gx’ may be used uninitialized [-Wmaybe-uninitialized] 53 | if(dist[gx][gy][i] == -1) continue; | ^ main.cpp:23:17: note: ‘gx’ was declared here 23 | int sx, sy, gx, gy; | ^~ main.cpp:53:23: warning: ‘gy’ may be used uninitialized [-Wmaybe-uninitialized] 53 | if(dist[gx][gy][i] == -1) continue; | ^ main.cpp:23:21: note: ‘gy’ was declared here 23 | int sx, sy, gx, gy; | ^~ In file included from /usr/include/c++/13/bits/uses_allocator_args.h:38, from /usr/include/c++/13/bits/memory_resource.h:41, from /usr/include/c++/13/string:58, from /usr/include/c++/13/bitset:52, from /usr/include/x86_64-linux-gnu/c++/13/bits/stdc++.h:52, from main.cpp:1: In constructor ‘constexpr std::_Head_base<_Idx, _Head, false>::_Head_base(_UHead&&) [with _UHead = int&; long unsigned int _Idx = 0; _Head = int]’, inlined from ‘constexpr std::_Tuple_impl<_Idx, _Head, _Tail ...>::_Tuple_impl(_UHead&&, _UTail&& ...) [with _UHead = int&; _UTail = {int&, int&}; <template-parameter-2-3> = void; long unsigned int _Idx = 0; _Head = int; _Tail = {int, int}]’ at /usr/include/c++/13/tuple:293:38, inlined from ‘constexpr std::tuple< <template-parameter-1-1> >::tuple(_UElements&& ...) [with _UElements = {int&, int&, int&}; bool _Valid = true; typename std::enable_if<_TCC<_Valid>::__is_implicitly_constructible<_UElements ...>(), bool>::type <anonymous> = true; _Elements = {int, int, int}]’ at /usr/include/c++/13/tuple:891:54, inlined from ‘int main()’ at main.cpp:35:13: /usr/include/c++/13/tuple:201:11: warning: ‘sx’ may be used uninitialized [-Wmaybe-uninitialized] 201 | : _M_head_impl(std::forward<_UHead>(__h)) { } | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ソースコード
#include <bits/stdc++.h> // #include <atcoder/all> using namespace std; // using namespace atcoder; #define rep(i, a, n) for(int i = a; i < n; i++) #define rrep(i, a, n) for(int i = a; i >= n; i--) #define inr(l, x, r) (l <= x && x < r) #define ll long long #define ld long double // using mint = modint1000000007; // using mint = modint998244353; constexpr int IINF = 1001001001; constexpr ll INF = 1e18; template<class t,class u> void chmax(t&a,u b){if(a<b)a=b;} template<class t,class u> void chmin(t&a,u b){if(b<a)a=b;} int main(){ int h, w, m; cin >> h >> w >> m; vector<string> s(h); int sx, sy, gx, gy; rep(i, 0, h){ cin >> s[i]; rep(j, 0, w){ if(s[i][j] == 'S') sx = i, sy = j; if(s[i][j] == 'G') gx = i, gy = j; } } vector<vector<vector<int>>> dist(h, vector<vector<int>>(w, vector<int>(m+1, -1))); queue<tuple<int, int, int>> que; dist[sx][sy][m] = 0; que.push({sx, sy, m}); while(!que.empty()){ auto [px, py, k] = que.front(); que.pop(); rep(i, 0, 4){ int nx = px+(i-1)%2, ny = py+(i-2)%2; int nk = k; if(!inr(0, nx, h) || !inr(0, ny, w)) continue; if(s[nx][ny] == '#') continue; if(inr(0, s[nx][ny]-'a', m) && (s[nx][ny]-'a') != k) continue; if(inr(0, s[nx][ny]-'1', m)) nk = s[nx][ny]-'1'; if(dist[nx][ny][nk] != -1) continue; dist[nx][ny][nk] = dist[px][py][k]+1; que.push({nx, ny, nk}); } } int ans = IINF; rep(i, 0, m+1){ if(dist[gx][gy][i] == -1) continue; chmin(ans, dist[gx][gy][i]); } if(ans == IINF) ans = -1; cout << ans << endl; return 0; }