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#include <cstdio>
#include <vector>

const int MAX_N = 1000009;

int nc, sum, nmin;

int main() {
  int n;
  scanf("%d", &n);
  nmin = 1009;
  for (int i = 0; i < n; ++i) {
    int a;
    scanf("%d", &a);
    sum += a;
    if (a&1) {
      ++nc;
      if (a < nmin)
	nmin = a;
    }
  }
  if (nc&1) {
    if (nmin == sum) {
      printf("NIESTETY\n");
    } else {
      printf("%d\n", sum-nmin);
    }
  } else {
    printf("%d\n", sum);
  }
}