Maximize the Confusion of an Exam.cpp

class Solution {
public:
    int maxConsecutiveAnswers(string s, int k) {
        int n=s.size();
        int start=0;
        int end=0;
        int t=0,f=0,ans=0;
        while(end<n) 
        {
            t+=(s[end]=='T');
            f+=(s[end]=='F');
            while(t>k && f>k) 
            {
                if(s[start]=='T')
                t--;
                else
                f--;
                start++;
            }
            ans=max(ans, end-start+1); 
            end++;
        }
        return ans;
    }
};