不知道哪里错了```java
import java.util.Arrays;
import java.util.Scanner;
public class Main {
public static void main(String[] args) {
Scanner scanner =new Scanner(System.in);
int n =scanner.nextInt();
if(n==1){
System.out.println("Jolly");
System.exit(0);
}
int flag=0;
int[] arr = new int[n];
for(int i=0;i< n;i++){
int number =scanner.nextInt();
arr[i]=number;
}
Arrays.sort(arr);
for(int i=1;i< arr.length;i++){
if(arr[i]-arr[i-1]!=1){
flag++;
break;
}
}
if(flag== 0){
System.out.println("Jolly");
}
else {
System.out.println("Not jolly");
}
}
}
