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#include <cstdio>

const int inf = 2015;

int main() {
    int n, mn = inf, sum = 0;
    scanf("%d", &n);
    for(int l, i = 0; i < n; ++i) {
        scanf("%d", &l);
        sum += l;
        if(l & 1 && l < mn) mn = l;
    }
    if(sum & 1) {
        if(mn == sum) {
            printf("NIESTETY\n");
            return 0;
        }
        sum -= mn;
    }
    printf("%d\n", sum);
    return 0;
}