1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
#include <cstdio>

const int BIG = 1000000000;

using namespace std;

int main() {
  int n;
  int sum = 0;
  int min = BIG;
  scanf("%d", &n);
  for (int i = 0; i < n; ++i) {
    int a;
    scanf("%d", &a);
    sum+=a;
    if (a % 2 && a < min) {
      min = a;
    }
  }
  if (!(sum%2)) {
    printf("%d\n", sum);
    return 0;
  }
  if (n == 1) {
    printf("NIESTETY\n");
    return 0;
  }
  printf("%d\n", sum-min);
}