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#include <cstdio>

 int main()
 {
        int n,i,mn;

        mn=1000000009;

        scanf("%d",&n);

        int tmp,sum;
        sum=0;

        for(i=1;i<=n;i++)
        {
                scanf("%d",&tmp);

                sum+=tmp;
                if(tmp%2==1)
                {
                        if(tmp<mn) mn=tmp;
                }
        }

        if(sum%2==0) printf("%d\n",sum);
        else
        {
                sum=sum-tmp;

                if(sum==0)
                {
                        printf("NIESTETY\n");
                }

                else
                {
                        printf("%d\n",sum);
                }
        }


 }