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

int main()
{
   int n,suma=0,banknot,mini=1000001;
  scanf("%d",&n);
   for(int i=0;i<n;i++)
   {
       scanf("%d", &banknot);
       suma+=banknot;
       if(banknot%2==1 && banknot<mini)
        mini=banknot;
   }
   if(suma%2==0) cout<<suma;
   else
    {suma-=mini;
    if(suma!=0) cout<<suma; else cout<<"NIESTETY";
    }
    return 0;
}