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

int main(void) {
  int n, *a, i, min;
  long long s=0;

  scanf("%d",&n);
  a = (int *)malloc(n*sizeof(int));

  for (i=0;i<n;++i) {
    scanf("%d",&a[i]);
    s+=a[i];
  }

  if (s % 2 == 0)
    printf("%lld",s);
  else {
    min = 1001;
    for (i=0;i<n;++i) {
      if ((a[i] % 2 != 0) && (a[i] < min))
        min=a[i];
    }
    if (min==s)
      printf("NIESTETY");
    else
    printf("%lld",s-min);
  }
  /*                                                                                                                                                                                                                                                                           
  for (i=0;i<n;++i) {                                                                                                                                                                                                                                                          
    printf(" %d",a[i]);                                                                                                                                                                                                                                                        
  }                                                                                                                                                                                                                                                                            
  printf("\n");                                                                                                                                                                                                                                                                
  */

  free(a);
  return 0;
}