题解 | 穷哈哈~

#include<stdio.h>
int main(){
    int n;
    char s[100005];
    int left=0,right=0;
    int max=0;
    scanf("%d",&n);
    scanf("%s",s);
    for(right=0;right<n;right++){
        if(s[right]!='a'&&s[right]!='h'){
            left=right+1;
            continue;
        }
        if(right>left&&s[right]==s[right-1])
        left=right;
         int length=right-left+1;
        if(length>max)
        max=length;
    }
    printf("%d",max);
}