#include <iostream>
using namespace std;
int n, cnt, c[1005], tong[100000003];

int main() {
	cin >> n;
	for (int i = 1; i <= n; i++) {
		cin >> c[i];
		if (c[i] > 0) {
			tong[c[i]]++;
		}
	}
	for (int i = 1; i <= n - 1; i++) {
		if (tong[i] == 0) {
			cout << "Not jolly";
			return 0;
		}
	}
	cout << "Jolly";
	return 0;
}