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
#include <vector>
#include <stdio.h>

using namespace std;

int main() {
    int size, in, lowest = 1001, sum = 0;

    scanf("%d", &size);

    for (int i=0; i<size; ++i){
        scanf("%d", &in);
        sum += in;
        if (in % 2 != 0 && in < lowest) {
            lowest = in;
        }
    }

    if (size == 1 && sum % 2 == 1) {
        printf("NIESTETY\n");
    } else if (sum % 2 == 1) {
        printf("%d\n", sum - lowest);
    } else {
        printf("%d\n", sum);
    }

    return 0;
}