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#include<iostream>
using namespace std;
int main(){
ios_base::sync_with_stdio(0);
int n;
cin>>n;
int i=0;
int x;
int min=1000000000;
long long int suma=0;
if(n==1){
cin>>x;
if(x%2==0){cout<<x;}
else{cout<<"NIESTETY";}
}
if(n!=1){
while(i<n){
cin>>x;
suma=suma+x;
if(x%2==1){if(x<min){min=x;}}
i++;}
if(suma%2==0){cout<<suma;}
if(suma%2==1){cout<<suma-min;}
}
}