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ZOJ Problem Set - 1879
Jolly Jumpers

Time Limit: 2 Seconds      Memory Limit: 65536 KB

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


Source: University of Waterloo Local Contest 2000.09.30
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