# include <iostream>
# include <cstring>
# include <cmath>
using namespace std;
int main()
{
int n;
cin >> n;
int a[1010];
bool f[1010];
memset(f, false, sizeof(f));
for (int i = 1; i <= n; i++)
cin >> a[i];
for (int i = 2; i < n; i++)
f[abs(a[i - 1] - a[i])] = true;
int flag = true;
for (int i = 1; i <= n; i++)
if (!f[i]) flag = false;
if (flag)
cout << "Jolly" << endl;
else
cout << "Not jolly" << endl;
return 0;
}
只得了10分,请大佬帮忙看看