大领袖们帮帮忙

#include <iostream>
#include <cstdio>
#define abs(i) (i>0)?i:(-i)
using namespace std;

const int MAX=1001;
int N,tong[MAX],T,P;

int main()
{
	scanf("%d",&N);
	for (int i=1; i<N; i++)
	{
		scanf("%d",&T);
		tong[abs(T-P)]=1;
		P=T;
	}
	for (int i=1; i<N; i++)
		if (!tong[i])
		{
			printf("Not jolly");
			return 0;
		}
	printf("Jolly");
	return 0;
}