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#include <bits/stdc++.h>

using namespace std;

long long n, sum, a, mn=10000;
int main()
{

    scanf("%dll", &n);
    while(n--)
    {
        scanf("%dll", &a);
        if(a%2==1 && a<mn) mn=a;
        sum+=a;
    }
    if(!sum%2) printf("%lld", sum);
    else if(sum-mn==0) printf("NIESTETY");
    else printf("%lld", sum-mn);
}