結果
| 問題 |
No.2366 登校
|
| コンテスト | |
| ユーザー |
gew1fw
|
| 提出日時 | 2025-06-12 18:11:52 |
| 言語 | PyPy3 (7.3.15) |
| 結果 |
WA
|
| 実行時間 | - |
| コード長 | 2,021 bytes |
| コンパイル時間 | 181 ms |
| コンパイル使用メモリ | 82,060 KB |
| 実行使用メモリ | 157,024 KB |
| 最終ジャッジ日時 | 2025-06-12 18:13:29 |
| 合計ジャッジ時間 | 6,163 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 * 2 |
| other | AC * 17 WA * 8 |
ソースコード
import heapq
def main():
import sys
input = sys.stdin.read().split()
idx = 0
N = int(input[idx]); idx +=1
M = int(input[idx]); idx +=1
K = int(input[idx]); idx +=1
T = int(input[idx]); idx +=1
magic = {}
for _ in range(K):
A = int(input[idx]); idx +=1
B = int(input[idx]); idx +=1
C = int(input[idx]); idx +=1
D = int(input[idx]); idx +=1
magic[(A, B)] = (C, D)
S = (N-1) + (M-1)
if S <= T:
print(0)
return
# Initialize distance structure
dist = [ [{} for _ in range(M+1)] for _ in range(N+1) ]
heap = []
heapq.heappush(heap, (0, 1, 1, 0))
dist[1][1][0] = 0
while heap:
f, i, j, t = heapq.heappop(heap)
if i == N and j == M and t <= T:
print(f)
return
if t > T:
continue
# Check if current state is outdated
current = dist[i][j].get(t, None)
if current is not None and current < f:
continue
# Move to adjacent cells
directions = [(-1,0), (1,0), (0,-1), (0,1)]
for di, dj in directions:
ni = i + di
nj = j + dj
if 1 <= ni <= N and 1 <= nj <= M:
new_t = t + 1
if new_t > T:
continue
if new_t not in dist[ni][nj] or f < dist[ni][nj].get(new_t, float('inf')):
dist[ni][nj][new_t] = f
heapq.heappush(heap, (f, ni, nj, new_t))
# Use magic cell if current cell is magic
if (i, j) in magic:
C, D = magic[(i, j)]
new_t = t + 2 - C
new_f = f + D
if new_t > T:
continue
if new_t not in dist[i][j] or new_f < dist[i][j].get(new_t, float('inf')):
dist[i][j][new_t] = new_f
heapq.heappush(heap, (new_f, i, j, new_t))
print(-1)
if __name__ == "__main__":
main()
gew1fw