結果
| 問題 |
No.1055 牛歩
|
| コンテスト | |
| ユーザー |
gew1fw
|
| 提出日時 | 2025-06-12 14:01:17 |
| 言語 | PyPy3 (7.3.15) |
| 結果 |
WA
|
| 実行時間 | - |
| コード長 | 2,448 bytes |
| コンパイル時間 | 384 ms |
| コンパイル使用メモリ | 82,648 KB |
| 実行使用メモリ | 161,268 KB |
| 最終ジャッジ日時 | 2025-06-12 14:02:30 |
| 合計ジャッジ時間 | 4,152 ms |
|
ジャッジサーバーID (参考情報) |
judge4 / judge2 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 5 |
| other | AC * 53 WA * 16 TLE * 1 |
ソースコード
import bisect
def main():
import sys
input = sys.stdin.read
data = input().split()
ptr = 0
N = int(data[ptr])
ptr +=1
M = int(data[ptr])
ptr +=1
A = list(map(int, data[ptr:ptr+M]))
ptr += M
# Initialize pos array (1-based)
pos = [0]*(M+1)
for i in range(1, M+1):
pos[i] = A[i-1]
# Initialize sorted_positions and positions set
sorted_positions = A.copy()
sorted_positions.sort()
positions = set(A)
Q = int(data[ptr])
ptr +=1
B = list(map(int, data[ptr:ptr+Q]))
for b in B:
current_pos = pos[b]
possible_moves = []
# Check left
new_pos = current_pos -1
if new_pos >=1 and new_pos not in positions:
possible_moves.append(new_pos)
# Check right
new_pos = current_pos +1
if new_pos <= N and new_pos not in positions:
possible_moves.append(new_pos)
if not possible_moves:
print("NO")
return
# For each possible move, compute available space
max_total = -1
best_new_pos = possible_moves[0]
max_available_left = -1
for new_pos in possible_moves:
# Find the number of pieces left and right
idx_left = bisect.bisect_left(sorted_positions, new_pos)
left_count = idx_left
idx_right = bisect.bisect_right(sorted_positions, new_pos)
right_count = len(sorted_positions) - idx_right
available_left = new_pos -1 - left_count
available_right = N - new_pos - right_count
total = available_left + available_right
if total > max_total or (total == max_total and available_left > max_available_left):
max_total = total
max_available_left = available_left
best_new_pos = new_pos
# Update data structures
# Remove current_pos from sorted_positions
idx = bisect.bisect_left(sorted_positions, current_pos)
if idx < len(sorted_positions) and sorted_positions[idx] == current_pos:
sorted_positions.pop(idx)
# Add best_new_pos to sorted_positions
bisect.insort(sorted_positions, best_new_pos)
# Update the set and pos array
positions.remove(current_pos)
positions.add(best_new_pos)
pos[b] = best_new_pos
print("YES")
if __name__ == "__main__":
main()
gew1fw