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#include <cstdio>

using namespace std;

const int MAX = 1000000;
const int MAX_VALUE = 1000;

int main() {

    int n;
    int sum = 0;
    int min_odd = MAX_VALUE + 1;
    int current;
    int result;

    scanf("%d", &n);

    for(int i=0; i<n; i++) {
        scanf("%d", &current);
        sum = sum + current;
        if(current % 2 == 1 && current < min_odd) {
            min_odd = current;
        }
    }

    if(n == 1 && sum % 2 == 1) {
        printf("NIESTETY\n");
        return 0;
    }

    if(sum % 2 == 0) {
        result = sum;
    }
    else {
        result = sum - min_odd;
    }

    printf("%d\n", result);
    return 0;
}