p03086 AtCoder Beginner Contest 122 - ATCoder
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`.

Constraints

* S is a string of length between 1 and 10 (inclusive).
* Each character in S is an uppercase English letter.

Input

Input is given from Standard Input in the following format:


S


Output

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

Examples

Input

ATCODER


Output

3


Input

HATAGAYA


Output

5


Input

SHINJUKU


Output

0
```python
import re

S=input()
ans = sorted((re.findall("[AGCT]*", S)), reverse=True, key=len)
print(len(ans[0]))
```