結果
| 問題 |
No.2096 Rage With Our Friends
|
| コンテスト | |
| ユーザー |
gew1fw
|
| 提出日時 | 2025-06-12 15:30:56 |
| 言語 | PyPy3 (7.3.15) |
| 結果 |
WA
|
| 実行時間 | - |
| コード長 | 2,121 bytes |
| コンパイル時間 | 366 ms |
| コンパイル使用メモリ | 82,220 KB |
| 実行使用メモリ | 849,460 KB |
| 最終ジャッジ日時 | 2025-06-12 15:32:31 |
| 合計ジャッジ時間 | 3,678 ms |
|
ジャッジサーバーID (参考情報) |
judge5 / judge2 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 6 WA * 2 MLE * 1 -- * 18 |
ソースコード
import sys
import heapq
def main():
H, W = map(int, sys.stdin.readline().split())
s_x, s_y, g_x, g_y = map(int, sys.stdin.readline().split())
grid = []
for _ in range(H):
grid.append(sys.stdin.readline().strip())
valid = [[False]*(W+2) for _ in range(H+2)]
for x in range(1, H+1):
for y in range(1, W+1):
if grid[x-1][y-1] == '.':
valid[x][y] = True
max_boosts = H * 2 # 一个估计值,实际可能更小
dp = [[[-1]*(max_boosts +1) for _ in range(W+2)] for __ in range(H+2)]
heap = []
dp[s_x][s_y][0] = 0
heapq.heappush(heap, (0, s_x, s_y, 0))
dirs = [-1, 1]
found = False
answer = -1
while heap:
boosts, x, y, e = heapq.heappop(heap)
if x == g_x and y == g_y:
answer = boosts
found = True
break
if boosts > max_boosts:
continue
# 通常跳跃
max_x = x + 1 + (e // 2)
x_high = min(max_x, H)
x_low = 1
for dx in range(x_high, x_low-1, -1):
for dy_dir in dirs:
ny = y + dy_dir
if 1 <= ny <= W and valid[dx][ny]:
new_e = max(0, x - dx)
if dp[dx][ny][boosts] < new_e:
dp[dx][ny][boosts] = new_e
heapq.heappush(heap, (boosts, dx, ny, new_e))
# Boost跳跃
max_x_boost = x + 1 + e
x_high_boost = min(max_x_boost, H)
for dx in range(x_high_boost, x_low-1, -1):
for dy_dir in dirs:
ny = y + dy_dir
if 1 <= ny <= W and valid[dx][ny]:
new_e_boost = max(0, x - dx)
if boosts + 1 > max_boosts:
continue
if dp[dx][ny][boosts+1] < new_e_boost:
dp[dx][ny][boosts+1] = new_e_boost
heapq.heappush(heap, (boosts+1, dx, ny, new_e_boost))
print(answer if found else -1)
if __name__ == "__main__":
main()
gew1fw