#!/usr/bin/env python
import sys
from itertools import groupby
numbers = (n for line in sys.stdin for n in map(int, line.split()))
next(numbers) # skip size
max_same_count = max(sum(1 for _ in same) for _, same in groupby(numbers))
print(max_same_count)
IyEvdXNyL2Jpbi9lbnYgcHl0aG9uCmltcG9ydCBzeXMKZnJvbSBpdGVydG9vbHMgaW1wb3J0IGdyb3VwYnkKCm51bWJlcnMgPSAobiBmb3IgbGluZSBpbiBzeXMuc3RkaW4gZm9yIG4gaW4gbWFwKGludCwgbGluZS5zcGxpdCgpKSkKbmV4dChudW1iZXJzKSAjIHNraXAgc2l6ZQptYXhfc2FtZV9jb3VudCA9IG1heChzdW0oMSBmb3IgXyBpbiBzYW1lKSBmb3IgXywgc2FtZSBpbiBncm91cGJ5KG51bWJlcnMpKQpwcmludChtYXhfc2FtZV9jb3VudCk=