No.3382 Palindrome Substrings (Python)
レベル :
/ 実行時間制限 : 1ケース 2.000秒 / メモリ制限
: 512 MB / スペシャルジャッジ問題 (複数の解が存在する可能性があります)
タグ : / 解いたユーザー数 23
作問者 :
alcea
/ テスター :
tRue
naka9
Rho
259-Momone
タグ : / 解いたユーザー数 23
作問者 :
Rho
問題文最終更新日: 2025-11-22 11:13:25
English (AI translation)
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Problem Statement
You are given a string $S$ of length $N$ consisting of lowercase English letters.
Find the number of non-empty (contiguous) substrings of $S$ that are palindromes.
Substrings that are identical as strings are counted separately if they are taken from different positions.
Input
$N$ $S$
- $1\leq N \leq 500$
- $N$ is an integer
- $S$ is a string of length $N$ consisting of lowercase English letters
Output
Print a newline at the end.
Score
Intended solution: $73$ bytes
Score formula
When the code length of a submitted source code is $x$ and the code length of the intended solution of this problem is $y$, the score of that source code is calculated as follows.- If $y\leq x$: $\lfloor100\exp(-0.012(x-y))\rfloor$ points
- If $x<y$: $101$ points
Sample
Sample 1
Input
5 aabab
Output
8
The $8$ palindromic substrings are a a b a b aa aba bab.
Sample 2
Input
4 wwww
Output
10
Sample 3
Input
23 theoreticalsciencegroup
Output
23
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