# Jolly Jumpers

Time Limit: Java: 2000 ms / Others: 2000 ms

Memory Limit: Java: 65536 KB / Others: 65536 KB

## Description

A sequence of n > 0 integers is called a jolly jumper if the absolute values of the difference between successive elements take on all the values 1 through n-1. For instance,

1 4 2 3

is a jolly jumper, because the absolutes differences are 3, 2, and 1 respectively. The definition implies that any sequence of a single integer is a jolly jumper. You are to write a program to determine whether or not each of a number of sequences is a jolly jumper.

## Input

Each line of input contains an integer n < 3000 followed by n integers representing the sequence.

## Output

For each line of input, generate a line of output saying "Jolly" or "Not jolly".

## Sample Input

4 1 4 2 3
5 1 4 2 -1 6

## Sample Output

Jolly
Not jolly

None

## Source

University of Waterloo Local Contest 2000.09.