結果
問題 |
No.3199 Key-Door Grid
|
ユーザー |
![]() |
提出日時 | 2025-07-11 21:54:21 |
言語 | C++23 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 259 ms / 3,000 ms |
コード長 | 2,740 bytes |
コンパイル時間 | 3,677 ms |
コンパイル使用メモリ | 293,512 KB |
実行使用メモリ | 33,792 KB |
最終ジャッジ日時 | 2025-07-11 21:54:33 |
合計ジャッジ時間 | 8,051 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge2 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 37 |
ソースコード
/* from collections import deque H,W,M = list(map(int,input().split())) S = [input() for _ in range(H)] for i in range(H): for j in range(W): if(S[i][j] == "S"): sy,sx = i,j elif(S[i][j] == "G"): gy,gx = i,j dy = [-1,1,0,0] dx = [0,0,-1,1] visited = [[[10**18 for _ in range(M+1)] for _ in range(W)] for _ in range(H)] q = deque([(0,sy,sx,M)]) while(q): v,y,x,key = q.popleft() if(y == gy and x == gx): print(v) exit() if(visited[y][x][key] <= v):continue visited[y][x][key] = v for i in range(4): next_y = y + dy[i] next_x = x + dx[i] if(next_y < 0 or H <= next_y):continue if(next_x < 0 or W <= next_x):continue if(S[next_y][next_x] == "#"):continue if(S[next_y][next_x].isnumeric()): q.append((v+1,next_y,next_x,int(S[next_y][next_x])-1)) elif(S[next_y][next_x] == "." or S[next_y][next_x] == "S" or S[next_y][next_x] == "G"): q.append((v+1,next_y,next_x,key)) else: if(key == ord(S[next_y][next_x]) - ord("a")): q.append((v+1,next_y,next_x,key)) print(-1) */ #include <bits/stdc++.h> using namespace std; using ll = long long; int main() { int H, W, M; cin >> H >> W >> M; vector<string> S(H); for (int i = 0; i < H; ++i) cin >> S[i]; int sy = -1, sx = -1, gy = -1, gx = -1; for (int i = 0; i < H; ++i) { for (int j = 0; j < W; ++j) { if (S[i][j] == 'S') sy = i, sx = j; if (S[i][j] == 'G') gy = i, gx = j; } } const int dy[4] = {-1, 1, 0, 0}; const int dx[4] = {0, 0, -1, 1}; vector<vector<vector<ll>>> visited(H, vector<vector<ll>>(W, vector<ll>(M + 1, 1e18))); deque<tuple<ll, int, int, int>> q; q.emplace_back(0, sy, sx, M); while (!q.empty()) { auto [v, y, x, key] = q.front(); q.pop_front(); if (y == gy && x == gx) { cout << v << endl; return 0; } if (visited[y][x][key] <= v) continue; visited[y][x][key] = v; for (int i = 0; i < 4; ++i) { int ny = y + dy[i]; int nx = x + dx[i]; if (ny < 0 || ny >= H || nx < 0 || nx >= W) continue; char ch = S[ny][nx]; if (ch == '#') continue; if (isdigit(ch)) { q.emplace_back(v + 1, ny, nx, ch - '0' - 1); } else if (ch == '.' || ch == 'S' || ch == 'G') { q.emplace_back(v + 1, ny, nx, key); } else { if (key == ch - 'a') { q.emplace_back(v + 1, ny, nx, key); } } } } cout << -1 << endl; return 0; }