#include #include using namespace std; int main() { int n; cin>>n; int jolly[n]; for(int i=0;i<n;i++) cin>>jolly[i];

int difference;
bool isjolly=true;
for(int i=1;i<n;i++)
{
	difference=abs(jolly[i]-jolly[i-1]);
	for(int i=0;i<n;i++)
	{
		if(difference==jolly[i])
		{
			isjolly=false;
			break;
		}
		if(!isjolly)
		{
			cout<<"Not jolly";
			return 0;
		}
	}
}
if(isjolly) cout<<"Jolly";
return 0;

}