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#include <bits/stdc++.h>

using namespace std;
const int MAX_VALUE = 1005;
int main() {
    int n;
    scanf("%d", &n);
    
    int minOdd = MAX_VALUE;
    int sum = 0;
    
    for (int i = 1; i <= n; i++) {
        int x;
        scanf("%d", &x);
        sum += x;
        if (x % 2 == 1) {
            minOdd = min(minOdd, x);
        }
    }
    
    if (sum % 2 == 0) {
        printf("%d\n", sum);
    } else {
        if (n != 1) {
            printf("%d\n", sum - minOdd);
        } else {
            printf("NIESTETY\n");
        }
    }
    
    return 0;
}