uva 10038

#include <iostream>
#include <cstring>
#include <cstdlib>
#include <stdio.h>
using namespace std;
#define MAXN 3010
int data[3010];
int flag[3010];

int main()
{
//freopen("in.txt","r",stdin);

int i,n;
while(cin>>n){
for(i=0;i<n;i++)
{
cin>>data[i];
}
memset(flag,0,sizeof(flag));
int ans=1;
for(i=0;i<n-1;i++)
{
if(abs(data[i+1]-data[i])>n-1)
{
ans=0;
break;
}
if(flag[abs(data[i+1]-data[i])]==0)
flag[abs(data[i+1]-data[i])]=1;
else
{
ans=0;
break;
}
}
if(ans)
cout<<"Jolly"<<endl;
else
cout<<"Not jolly"<<endl;
}

return 0;
}