zoj1879

简单题

#include <iostream>
#include <vector>
#include <algorithm>
using namespace std;

int main()
{
int num;
while(cin >> num)
{
vector<int> integer;
vector<int> ab;
for(int i = 0;i < num;i++)
{
int num2;
cin >> num2;
integer.push_back(num2);
if(num == 1)
{
cout << "Jolly" << endl;
}
}
for(int i = 0;i < num - 1;i++)
{
if(integer[i] - integer[i+1] > 0)
ab.push_back(integer[i] - integer[i+1]);
else ab.push_back(integer[i+1] - integer[i]);
}
for(int i = 1;i < num;i++)
{
if(find(ab.begin(),ab.end(),i) == ab.end())
{
cout << "Not jolly" << endl;
break;
}
if(i == num - 1) cout << "Jolly" << endl;
}
}
return 0;
}