# 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