結果
| 問題 |
No.1694 ZerOne
|
| ユーザー |
gew1fw
|
| 提出日時 | 2025-06-12 19:42:55 |
| 言語 | PyPy3 (7.3.15) |
| 結果 |
TLE
|
| 実行時間 | - |
| コード長 | 1,472 bytes |
| コンパイル時間 | 139 ms |
| コンパイル使用メモリ | 82,084 KB |
| 実行使用メモリ | 63,600 KB |
| 最終ジャッジ日時 | 2025-06-12 19:43:02 |
| 合計ジャッジ時間 | 3,762 ms |
|
ジャッジサーバーID (参考情報) |
judge3 / judge1 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | TLE * 1 -- * 30 |
ソースコード
from collections import deque
def count_possible_strings(S):
visited = set()
queue = deque([S])
visited.add(S)
n = len(S)
while queue:
current = queue.popleft()
# Precompute the number of 0s and 1s for all possible substrings
# This is a 2D array where prefix[i][j] is the count of 0s from index i to j inclusive
prefix = [[0]*(n) for _ in range(n)]
for i in range(n):
count0 = 0
for j in range(i, n):
if current[j] == '0':
count0 += 1
prefix[i][j] = count0
# Iterate over all possible t and u pairs
for Lt in range(n):
for Rt in range(Lt, n):
t0 = prefix[Lt][Rt]
t1 = (Rt - Lt + 1) - t0
# Now find u after Rt
for Lu in range(Rt+1, n):
for Ru in range(Lu, n):
u0 = prefix[Lu][Ru]
u1 = (Ru - Lu + 1) - u0
if t0 == u0 and t1 == u1:
# Swap t and u
new_str = current[:Lt] + current[Lu:Ru+1] + current[Rt+1:Lu] + current[Lt:Rt+1] + current[Ru+1:]
if new_str not in visited:
visited.add(new_str)
queue.append(new_str)
return len(visited)
S = input().strip()
print(count_possible_strings(S))
gew1fw