#include <iostream>
#include <fstream>
#include <iomanip>
#include <algorithm>
using namespace std;

int main() {
    int a, b,c=0, sum=-99999999;
    ifstream input("U1.txt");
    ofstream output("U1rez.txt");
    if(input.fail()) {
        cout << "Nera failo...";
    } else {
        input >> a;
        int b[a];
        for (int i=0; i<a; i++) {
            input >> b[i];
            if (b[i]%2 == 0 && b[i]>sum){
                sum = b[i];
            }
        }
        if(sum > -99999999){
        output << sum;
        }else{
        output << "Ne";
        }
    }

    input.close();
    output.close();
    return 0;
}