ATCoder

题目描述

You are given a string $S$ consisting of uppercase English letters. Find the length of the longest ACGT string that is a substring (see Notes) of $S$. Here, a ACGT string is a string that contains no characters other than $A$, $C$, $G$ and $T$.

输入格式

Input is given from Standard Input in the following format: $S$

输出格式

Print the length of the longest ACGT string that is a substring of $S$.

ATCODER

3

HATAGAYA

5

SHINJUKU

0

提示

$S$ is a string of length between $1$ and $10$ (inclusive). Each character in $S$ is an uppercase English letter.A substring of a string $T$ is a string obtained by removing zero or more characters from the beginning and the end of $T$. For example, the substrings of $ATCODER$ include $TCO$, $AT$, $CODER$, $ATCODER$ and $$ (the empty string), but not $AC$.Among the ACGT strings that are substrings of $ATCODER$, the longest one is $ATC$.
Among the ACGT strings that are substrings of $HATAGAYA$, the longest one is $ATAGA$.
Among the ACGT strings that are substrings of $SHINJUKU$, the longest one is $$ (the empty string).

标签: AtCoder|abc122B

来源

AtCoder|abc122B