結果
| 問題 |
No.1323 うしらずSwap
|
| コンテスト | |
| ユーザー |
gew1fw
|
| 提出日時 | 2025-06-12 19:53:10 |
| 言語 | PyPy3 (7.3.15) |
| 結果 |
MLE
|
| 実行時間 | - |
| コード長 | 2,062 bytes |
| コンパイル時間 | 178 ms |
| コンパイル使用メモリ | 82,004 KB |
| 実行使用メモリ | 516,944 KB |
| 最終ジャッジ日時 | 2025-06-12 19:54:12 |
| 合計ジャッジ時間 | 6,829 ms |
|
ジャッジサーバーID (参考情報) |
judge4 / judge5 |
(要ログイン)
| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 13 MLE * 1 -- * 45 |
ソースコード
import sys
from collections import deque
def main():
input = sys.stdin.read().split()
ptr = 0
H = int(input[ptr]); ptr += 1
W = int(input[ptr]); ptr += 1
ra = int(input[ptr]); ptr += 1
ca = int(input[ptr]); ptr += 1
rb = int(input[ptr]); ptr += 1
cb = int(input[ptr]); ptr += 1
grid = []
for _ in range(H):
row = input[ptr]
grid.append(list(row))
ptr += 1
start_a = (ra-1, ca-1)
start_b = (rb-1, cb-1)
target_a = start_b
target_b = start_a
directions = [(-1, 0), (1, 0), (0, -1), (0, 1)]
visited = dict()
queue = deque()
initial_state = (start_a[0], start_a[1], start_b[0], start_b[1])
visited[initial_state] = 0
queue.append((start_a[0], start_a[1], start_b[0], start_b[1], 0))
found = False
answer = -1
while queue:
a_r, a_c, b_r, b_c, steps = queue.popleft()
if (a_r, a_c) == target_a and (b_r, b_c) == target_b:
answer = steps
found = True
break
for dr, dc in directions:
new_a_r = a_r + dr
new_a_c = a_c + dc
if 0 <= new_a_r < H and 0 <= new_a_c < W:
if grid[new_a_r][new_a_c] == '.' and (new_a_r, new_a_c) != (b_r, b_c):
new_state = (new_a_r, new_a_c, b_r, b_c)
if new_state not in visited:
visited[new_state] = steps + 1
queue.append((new_a_r, new_a_c, b_r, b_c, steps + 1))
for dr, dc in directions:
new_b_r = b_r + dr
new_b_c = b_c + dc
if 0 <= new_b_r < H and 0 <= new_b_c < W:
if grid[new_b_r][new_b_c] == '.' and (new_b_r, new_b_c) != (a_r, a_c):
new_state = (a_r, a_c, new_b_r, new_b_c)
if new_state not in visited:
visited[new_state] = steps + 1
queue.append((a_r, a_c, new_b_r, new_b_c, steps + 1))
print(answer if found else -1)
if __name__ == '__main__':
main()
gew1fw