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#include<stdio.h>
#include<limits.h>
#include<stdlib.h>

int main(void)
{
  unsigned int coin,min;
  unsigned long i,n,sum;
  if(scanf("%lu", &n)==0)
    return 1;
  min = -1;
  sum = 0;
  for(i=0;i<n;i++){
    if(scanf("%u", &coin)==0)
      return 1;
    if((coin&1)==1 && coin<min)
      min=coin;
    sum+=coin;
  }
  if((sum&1)==1)
    sum-=min;
  if(sum==0)
    printf("NIESTETY\n");
  else
    printf("%lu\n",sum);
  return 0;
}