#include <iostream>
using namespace std;
int n,i,v[101],mini=999999999;
int main()
{
    cin>>n;
    for(i=1; i<=n; i++)
        cin>>v[i];
    cout<<endl;
    for(i=1; i<=n; i++)
        if(v[i]%2==0)
           { if(v[i]<mini)
            mini=v[i];
           }
    if(mini==999999999)
        cout<<"NU EXISTA";
        else cout<<mini;
    return 0;
}