551. Student Attendance Record I

static int wing=[]()
{
    std::ios::sync_with_stdio(false);
    cin.tie(NULL);
    return 0;
}();

class Solution 
{
public:
    bool checkRecord(string s) 
    {
        int countA=0;
        int len=s.length();
        for(int i=0;i<len;i++)
        {
            if(s[i]=='A')
                countA++;
            if(s[i]=='L')
            {
                if(i+2<len&&s[i+1]=='L'&&s[i+2]=='L')
                    return false;
            }
        }
        return countA>1? false:true;
    }
};

简单，问题不大