import java.util.*;

public class KCPCorKUPC{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);

        int N = sc.nextInt();
        sc.nextLine();

        String S = sc.nextLine();

        if(S.charAt(7*(N/11)) == '#'){
            System.out.println("KCPC");
        }else{
            System.out.println("KUPC");
        }

        sc.close();
    }
}