#include<stdio.h>
int main()
{
    int n = 0;
    scanf("%d",&n);
    int i = 0;
    int arr[10001];
    int flag = 0;
    for(i = 0;i<=n-1;i++)
    {
        scanf("%d",&arr[i]);
    }
    i = 0;
    int j = 0;
    for(i = 1;i<=n-1;i++)
    {
        for(j = 0;j<=n-1;j++)
        {
            if(arr[j] == i)
            {
                flag++;
                break;
            }
        }
    }
    if(flag == n-1)
    {
        printf("Jolly");
    }
    else
    {
        printf("Not jolly");
    }
    return 0;
}