import java.util.Scanner;

public class No3556 {

	public static void main(String[] args) {
		
		int N = 0;
		int i = 0;
		String str = "";
		
		Scanner scanner = new Scanner(System.in);
		N = Integer.parseInt(scanner.next());
		
		for (i = 0; i < N;i++) {
			if(i == 1) {
				str = scanner.next();
			}
			
		}
		
		scanner.close();
		
		String[] ary = str.split("");
		int count = 0;
		
		for(i = 0;i < ary.length;i++) {
			if(ary[i].equals("#")) {
				count++;
			}
		}
		
		if(count == N/11*4) {
			System.out.println("KUPC");
		}else {
			System.out.println("KCPC");
		}
		
	}

}