結果
| 問題 |
No.1512 作文
|
| コンテスト | |
| ユーザー |
lam6er
|
| 提出日時 | 2025-03-20 20:26:15 |
| 言語 | PyPy3 (7.3.15) |
| 結果 |
WA
|
| 実行時間 | - |
| コード長 | 1,530 bytes |
| コンパイル時間 | 478 ms |
| コンパイル使用メモリ | 82,820 KB |
| 実行使用メモリ | 121,888 KB |
| 最終ジャッジ日時 | 2025-03-20 20:27:37 |
| 合計ジャッジ時間 | 4,870 ms |
|
ジャッジサーバーID (参考情報) |
judge1 / judge4 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 4 |
| other | AC * 21 WA * 17 |
ソースコード
from sys import stdin
def main():
n = int(stdin.readline())
valid_strings = []
for _ in range(n):
s = stdin.readline().strip()
good = True
for i in range(1, len(s)):
if s[i] < s[i-1]:
good = False
break
if good:
start = s[0]
end = s[-1]
length = len(s)
valid_strings.append((start, end, length))
dp = [0] * 26
max_dp = [0] * 26
dp_prev = 0 # Represents the initial state (no characters chosen)
# Initialize max_dp based on initial dp values
current_max = 0
for i in range(26):
current_max = max(current_max, dp[i])
max_dp[i] = current_max
for start, end, length in valid_strings:
a = ord(start) - ord('a')
b = ord(end) - ord('a')
# Calculate the maximum possible value before appending this string
max_before = max(dp_prev, max_dp[a])
candidate = max_before + length
# Update dp[b] if candidate is larger
if candidate > dp[b]:
dp[b] = candidate
# Recalculate the max_dp array after updating dp
current_max = 0
new_max_dp = []
for i in range(26):
current_max = max(current_max, dp[i])
new_max_dp.append(current_max)
max_dp = new_max_dp
# The answer is the maximum value between the initial state and the best in max_dp
print(max(max_dp[-1], dp_prev))
if __name__ == "__main__":
main()
lam6er