APCS-Alternate

#include <bits/stdc++.h>
using namespace std;

int main(){
    string str;
    int k;
    while(cin>>k>>str){
        bool state = islower(str[0]); // is lower is the base of variable
        int maxLen = 0;
        int len=0;
        for(int i=0;str.size();i++){
            if(i>0 && i%k==0){//change char state

            }
            if(islower(str[i]) == state){ //case condition
                len++;
            }
            else{
                len = 0;
                state = islower(str[i+1]);
                if(len > maxLen)
                    maxLen = len;
            }
        }
    }
    return 0;
}