結果
| 問題 | No.1909 Detect from Substrings |
| コンテスト | |
| ユーザー |
lam6er
|
| 提出日時 | 2025-03-20 20:38:10 |
| 言語 | PyPy3 (7.3.15) |
| 結果 |
MLE
|
| 実行時間 | - |
| コード長 | 1,876 bytes |
| コンパイル時間 | 248 ms |
| コンパイル使用メモリ | 82,288 KB |
| 実行使用メモリ | 594,204 KB |
| 最終ジャッジ日時 | 2025-03-20 20:38:30 |
| 合計ジャッジ時間 | 6,564 ms |
|
ジャッジサーバーID (参考情報) |
judge1 / judge5 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 1 MLE * 1 -- * 34 |
ソースコード
import sys
def main():
input = sys.stdin.read().split()
idx = 0
N, M = int(input[idx]), int(input[idx+1])
idx += 2
input_set = set()
input_list = []
for _ in range(N):
s = input[idx]
idx += 1
input_set.add(s)
input_list.append(s)
valid_t = set()
seen_candidates = set()
for s in input_list:
s_len = len(s)
# Generate all possible T_candidate by inserting a character into s
for pos in range(s_len + 1):
for c in 'abcdefghijklmnopqrstuvwxyz':
# Create candidate T
t_candidate = s[:pos] + c + s[pos:]
if t_candidate in seen_candidates:
continue
seen_candidates.add(t_candidate)
# Check if all input strings are deletions of t_candidate
all_valid = True
for check_s in input_list:
if len(check_s) != M:
all_valid = False
break
if not is_deletion(check_s, t_candidate):
all_valid = False
break
if all_valid:
valid_t.add(t_candidate)
print(len(valid_t))
def is_deletion(s, t):
if len(s) != len(t) - 1:
return False
i = j = 0
skipped = False
while i < len(s) and j < len(t):
if s[i] == t[j]:
i += 1
j += 1
else:
if not skipped:
skipped = True
j += 1
else:
return False
# Check remaining characters in t if needed
if not skipped:
j += 1
# Ensure all of s is matched and exactly one character skipped
return i == len(s) and j == len(t)
if __name__ == "__main__":
main()
lam6er