結果
| 問題 |
No.506 限られたジャパリまん
|
| コンテスト | |
| ユーザー |
gew1fw
|
| 提出日時 | 2025-06-12 19:47:40 |
| 言語 | PyPy3 (7.3.15) |
| 結果 |
WA
|
| 実行時間 | - |
| コード長 | 1,623 bytes |
| コンパイル時間 | 151 ms |
| コンパイル使用メモリ | 82,716 KB |
| 実行使用メモリ | 77,052 KB |
| 最終ジャッジ日時 | 2025-06-12 19:47:47 |
| 合計ジャッジ時間 | 6,231 ms |
|
ジャッジサーバーID (参考情報) |
judge5 / judge1 |
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| ファイルパターン | 結果 |
|---|---|
| other | AC * 2 WA * 23 |
ソースコード
MOD = 10**9 + 7
H, W, K, P = map(int, input().split())
friends = []
for _ in range(K):
x, y, name = input().split()
x = int(x)
y = int(y)
friends.append((x, y, name))
# Precompute the grid: each cell has the friend index or -1
grid = [[-1 for _ in range(W + 1)] for __ in range(H + 1)]
for idx in range(K):
x, y, name = friends[idx]
grid[x][y] = idx
max_paths = 0
best_mask = None
for mask in range(0, 1 << K):
s = bin(mask).count('1')
if s > P:
continue
# Initialize DP table
dp = [[0] * (W + 1) for _ in range(H + 1)]
dp[0][0] = 1
for i in range(H + 1):
for j in range(W + 1):
if i == 0 and j == 0:
continue
# Check if the cell is blocked
if grid[i][j] != -1:
friend_idx = grid[i][j]
if (mask & (1 << friend_idx)) == 0:
dp[i][j] = 0
continue
# Calculate the number of paths
sum_val = 0
if i > 0:
sum_val += dp[i-1][j]
if j > 0:
sum_val += dp[i][j-1]
dp[i][j] = sum_val % MOD
current = dp[H][W]
if current > max_paths:
max_paths = current
best_mask = mask
if max_paths == 0:
print(0)
else:
print(max_paths % MOD)
# Collect the names in the order of their occurrence in the input
output = []
for idx in range(K):
if (best_mask & (1 << idx)) != 0:
output.append(friends[idx][2])
for name in output:
print(name)
print()
gew1fw