結果

問題 No.2283 Prohibit Three Consecutive
ユーザー LyricalMaestro
提出日時 2025-01-18 20:13:39
言語 PyPy3
(7.3.15)
結果
AC  
実行時間 241 ms / 2,000 ms
コード長 1,701 bytes
コンパイル時間 591 ms
コンパイル使用メモリ 82,560 KB
実行使用メモリ 78,648 KB
最終ジャッジ日時 2025-01-18 20:13:43
合計ジャッジ時間 3,047 ms
ジャッジサーバーID
(参考情報)
judge1 / judge4
このコードへのチャレンジ
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ファイルパターン 結果
sample AC * 1
other AC * 13
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ソースコード

diff #
プレゼンテーションモードにする

# https://yukicoder.me/problems/no/2283
def solve(N, S):
# state = 0: (0, 0), 1 = (0, 1), 2 = (1, 0), 3 = (1, 1)
state_tuples = ((0, 0), (0, 1), (1, 0), (1, 1))
for init_state_index, init_state in enumerate(state_tuples):
is_ok = True
for i in range(2):
s = S[i]
if s not in (str(init_state[i]), "?"):
is_ok = False
break
if not is_ok:
continue
dp = [False] * 4
dp[init_state_index] = True
for i in range(2, N):
new_dp = [False] * 4
s = S[i]
if s in ("1", "?"):
new_dp[1] |= dp[0]
new_dp[3] |= dp[1]
new_dp[1] |= dp[2]
if s in ("0", "?"):
new_dp[2] |= dp[1]
new_dp[0] |= dp[2]
new_dp[2] |= dp[3]
dp = new_dp
for j in range(4):
if dp[j]:
last_array = list(state_tuples[j]) + list(init_state)
last_array = "".join(map(str, last_array))
if last_array.startswith("000"):
continue
if last_array.startswith("111"):
continue
if last_array.endswith("000"):
continue
if last_array.endswith("111"):
continue
return "Yes"
return "No"
def main():
T = int(input())
answers = []
for _ in range(T):
N = int(input())
S = input()
ans = solve(N, S)
answers.append(ans)
for ans in answers:
print(ans)
if __name__ == "__main__":
main()
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