Jolly Jumpers

jolly_jumpers.cpp

/*
Author: Ashwini Chaudhary
Problem: Jolly Jumpers (http://goo.gl/O6I2Y)
UVA Online Judge Problem ID:10038
lang :c++
*/


#include<iostream>
#include<algorithm>
#include<vector>
using namespace std;
#define VEC_PRINTER(v,l){for(int po=0;po<l;po++)cout<<v[po]<<" ";}

int main(void){
    int n,i,curr,prev,ans;
     while(cin >>n){

        vector<int> vec;
        cin>>prev;
        for(i=2;i<=n;i++){
            cin >>curr;
            vec.push_back(abs(prev-curr));
            prev=curr;
        }

        sort(vec.begin(),vec.end());
        ans=0;
        for(i=1;i<n;i++){
            if(vec[i-1]==i)
                ans++;
        }
        if (ans==n-1)cout <<"Jolly"<<endl;
        else cout<< "Not jolly"<<endl;
    }
return 0;
}