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#include <cstdio>

int main()   
{
    long long sum = 0;
    int n, x, min = 9999;
    
    scanf("%d", &n);
    for(int i=0; i<n; i++, sum+=x)
    {
        scanf("%d", &x);
        if(x%2==1 and x < min) min = x;
    }
    
    if(sum % 2 == 0) printf("%lld\n", sum);
    else 
    {
        if(n == 1) printf("NIESTETY\n");
        else printf("%lld\n", sum-min);
    }
    
    return 0;
}