import java.util.*;
public class uva10038 {
public static void main(String [] args) {
Scanner scn = new Scanner(System.in);
while(scn.hasNextInt()) {
int n = scn.nextInt();
if(n <= 3000 && n > 0) {
ArrayList <Integer> num = new ArrayList<Integer>();
ArrayList <Integer> jolly = new ArrayList<Integer>();
for(int x=0;x<n;x++) {
num.add(scn.nextInt());
}
boolean bool_jolly = true;
for(int x=0;x<n-1;x++) {
int a = num.get(x);
int b = num.get(x+1);
int total = Math.abs(a-b);
jolly.add(total);
if(total >= n) {
bool_jolly = false;
break;
}
}
if(num.size()== 1) {
jolly.add(num.get(0));
}
if(bool_jolly) {
Collections.sort(jolly);
if(jolly.get(0) > 0) {
for(int x=0;x<jolly.size()-1;x++) {
int a = jolly.get(x);
int b = jolly.get(x+1);
if((b-a) != 1) {
bool_jolly = false;
break;
}
}
if(bool_jolly) {
System.out.println("Jolly");
}
else {
System.out.println("Not jolly");
}
}
else {
if(num.size()==1) {
System.out.println("Jolly");
}
else {
System.out.println("Not jolly");
}
}
}
else {
System.out.println("Not jolly");
}
}
else {
System.out.println("Not jolly");
}
}
}
}