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#include<bits/stdc++.h>
using namespace std;

int main(){
  int n;
  assert(scanf("%d", &n) == 1);
  int sum = 0;
  int minodd = 1001;
  for(int i = 1; i <= n; i++){
    int ai;
    assert(scanf("%d", &ai) == 1);
    sum += ai;
    if(ai%2 && ai < minodd) minodd = ai;
  }
  if(sum%2) sum -= minodd;
  if(sum == 0) {
    printf("NIESTETY\n");
  } else {
    printf("%d\n", sum);
  }
  return 0;
}