結果

問題 No.2695 Warp Zone
ユーザー LyricalMaestro
提出日時 2024-12-29 13:46:27
言語 PyPy3
(7.3.15)
結果
AC  
実行時間 297 ms / 2,000 ms
コード長 1,533 bytes
コンパイル時間 751 ms
コンパイル使用メモリ 82,364 KB
実行使用メモリ 78,168 KB
最終ジャッジ日時 2024-12-29 13:46:33
合計ジャッジ時間 5,599 ms
ジャッジサーバーID
（参考情報） 		judge2 / judge5
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ファイルパターン 結果
sample AC * 3
other AC * 24
権限があれば一括ダウンロードができます

ソースコード

diff #
プレゼンテーションモードにする

## https://yukicoder.me/problems/no/2695
import heapq
MAX_INT = 10 ** 18
def main():
    H, W, N = map(int, input().split())
    warps = []
    for _ in range(N):
        a, b, c, d = map(int, input().split())
        warps.append((a, b, c, d))
    
    points = [(1, 1)]
    for a, b, c, d in warps:
        points.append((a, b)) 
    for a, b, c, d in warps:
        points.append((c, d))
    points.append((H, W)) 
    # dijkstra
    fix = [MAX_INT] * (2 * N + 2)
    seen = [MAX_INT] * (2 * N + 2)
    queue = []
    seen[0] = 0
    heapq.heappush(queue, (0, 0))
    while len(queue) > 0:
        cost, v = heapq.heappop(queue)
        if fix[v] < MAX_INT:
            continue
        fix[v] = cost
        # ワープ
        if 1 <= v <= N:
            w = v + N
            if fix[w] == MAX_INT:
                h_v, w_v = points[v]
                h_w, w_w = points[w]
                new_cost = cost + 1
                if seen[w] > new_cost:
                    seen[w] = new_cost
                    heapq.heappush(queue, (new_cost, w))
        # 普通の移動
        for w in range(2 * N + 2):
            if fix[w] < MAX_INT:
                continue
            h_v, w_v = points[v]
            h_w, w_w = points[w]
            new_cost = cost + (abs(h_v - h_w) + abs(w_v - w_w))
            if seen[w] > new_cost:
                seen[w] = new_cost
                heapq.heappush(queue, (new_cost, w))
                
    print(fix[-1])
  
    
if __name__ == "__main__":
    main()
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