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#include <cstdio>
#include <vector>

using namespace std;

int main()
{
  int num_bills;
  long long int sum = 0;
  int x;
  vector<int> input;
  int min_odd = 1000001;

  scanf ("%d",&num_bills);

  for(int i = 0; i < num_bills; i++){
    scanf ("%d",&x);
    input.push_back(x);
  }

  for(int i=0; i < num_bills; i++){

    int nominal = input.at(i);

    if(nominal % 2 == 1 && nominal < min_odd){
      min_odd = nominal;
    }

    sum += nominal;
  }

  if(sum % 2 == 0){
    printf("%lld",sum);
  }else{

    if(num_bills == 1){
      printf("%s","NIESTETY");
 
    }else{
   sum -= min_odd;
    printf("%lld",sum);

}

 
  }

}