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/* 
 * File:   main.cpp
 * Author: zbigniew
 *
 * Created on 28 wrzesień 2015, 19:40
 */

#include <cstdlib>
#include <iostream>
using namespace std;

/*
 * 
 */
int main(int argc, char** argv) {
    int n,i,min=1000,kie=0;
    //int a[5]={3,3,4,3,3};
    int a;
    cin >> n;
    for (i=0 ; i<n;i++)
    {
        cin >> a;
      kie=kie+a;  
     if (a>a/2*2 && a<min)    
        min=a;
    }
    if (kie>kie/2*2) 
        kie=kie-min;
    if (kie>0)
        cout<<kie;
    else
        cout<<"NIESTETY"<<endl;
    return 0;
}