10038

#include<iostream>
#include<sstream>
#include<string>
#include<vector>
#include<cmath>
#include<set>

using namespace std;

int main(){
    string s;

    while(getline(cin, s)){
        set<int> ss;
        vector<int> n;
        stringstream stream(s);
        int t;
        while(stream>>t) n.push_back(t);


        for(int i=0; i<n.size(); i++)
            if(i+1<n.size()) ss.insert(abs(n[i]-n[i+1]));

        set<int>::iterator it;
        bool b = true;
        int i=1;
        for(it=ss.begin(); it!=ss.end(); it++){
            if(*it!=i){
                b=false;
                break;
            }
            i++;
        }

        if(b) cout<<"Jolly"<<endl;
        else cout<<"Not jolly"<<endl;
    }



    return 0;
}