题解 | 穷哈哈~

# -*- coding: utf-8 -*-
"""
Created on Mon Jan 12 20:30:20 2026

@author: 11924
"""
o=int(input())
s = list(input())
maxlen = 0
l,r=0,0
ha={'a':'h','h':'a'}
current=0
last=0
for i in range(len(s)):
    if current==0:
        if s[i] in ha.values():
            current+=1
            last=i
    else:
        if s[i] == ha[s[last]]:
            current+=1
            last=i
        else:
            maxlen=max(maxlen,current)
            if s[i]in ha.values():
                current=1
            else:
                current=0
   # print(f"i:{i}  s[i]:{s[i]}      last:{last}     maxlen:{maxlen}     cur:{current}")
    maxlen=max(maxlen,current)
print(maxlen)

在不匹配时，cur不可以直接置0