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

int main() {
	int a;
	cin >> a;
	vector<char> v(a);
	for (int i = 0; i < a; i++) {
		cin >> v[i];
	}
	a /= 11;
	if (v[(a*10)-1] == '#') {
		cout << "KCPC" << endl;
	}
	else {
		cout << "KUPC" << endl;
	}
}