def solve():
n = int(input().strip())
arr = list(map(int, input().split()))
arr.sort(reverse=True)
petals= sum(arr)
if petals%2 != 0:
print(petals)
return petals
else:
for i in range(n-1, -1,-1):
if arr[i] % 2 != 0:
print(petals- arr[i])
return petals- arr[i]
print(0)
return 0
solve()#include <bits/stdc++.h>
#define _ ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
#define endl '\n'
#define f first
#define s second
#define ou ||
#define dbg(x) cout << #x << " = " << x << endl
#define forn(i, n) for (int i = 0; i < int(n); i++)
typedef long long ll;
const int INF = 0x3f3f3f3f;
const ll LINF = 0x3f3f3f3f3f3f3f3fll;
using namespace std;
int main(){_
int n; cin>>n;
vector<int> impar, par;
while(n--){
int num;cin>>num;
if(num%2==0) par.push_back(num);
else impar.push_back(num);
}
int saida =0;
sort(impar.begin(), impar.end(), greater<>());
sort(par.begin(), par.end(), greater<>());
int quantos = par.size();
if(impar.size()!=0){
if(impar.size()%2==0){
for(int i=0; i < impar.size() - 1; i++){
saida+=impar[i];
}
for(int i =0 ; i < par.size(); i++){
saida+=par[i];
}
}else{
for(int i = 0; i < impar.size(); i++){
saida+=impar[i];
}
for(int i =0 ; i < par.size(); i++){
saida+=par[i];
}
}
}
cout<<saida<<endl;
}
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