#include <iostream>
using namespace std;
int main()
{
int n, v[255], MAX, ok=1;
cin >> n;
for (int i = 0; i<n; i++)
{
cin >> v[i];
if(ok==1 and v[i]%2==1){MAX=v[i];ok=0;}
else if (v[i]%2==1)
{
if (v[i]>MAX){MAX=v[i];}
}
}
if (ok == 1){
cout << "NU EXISTA";
}
else
{
cout << MAX;
}
return 0;
}