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

int main() {
  
  int n, m;
  int smallest_odd = 1001;
  int s = 0;
  
  scanf("%d", &n);
  
  for(int i = 0; i < n; ++i){
    scanf("%d", &m);
    s += m;
    if((m & 1) && (m < smallest_odd)){
      smallest_odd = m;
    }
  }  
  
  if(s & 1){
    if(n == 1){
      printf("%s\n", "NIESTETY");
      return 0;
    }else{
      s -= smallest_odd;
    }    
  }
  
  printf("%d\n", s);
  
  return 0;
}