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#include <bits/stdc++.h>

using namespace std;

typedef long long LL;

template<typename TH>
void debug_vars(const char* data, TH head){
    cerr << data << "=" << head << "\n";
}

template<typename TH, typename... TA>
void debug_vars(const char* data, TH head, TA... tail){
    while(*data != ',') cerr << *data++;
    cerr << "=" << head << ",";
    debug_vars(data+1, tail...);
}

#ifdef LOCAL
#define debug(...) debug_vars(#__VA_ARGS__, __VA_ARGS__)
#else
#define debug(...) (__VA_ARGS__)
#endif

/////////////////////////////////////////////////////////


int N;
int total, minOdd;
bool anyOdd;

void input(){
    anyOdd = false;
    total = 0;
    minOdd = numeric_limits<int>::max();

    scanf("%d", &N);
    for(int i = 0; i < N; i++){
        int v;
        scanf("%d", &v);
        total += v;
        if(v % 2 == 1){
            minOdd = min(minOdd, v);
            anyOdd = true;
        }
    }
}

int main(){
    input();

    if(total % 2 == 0){
        printf("%d\n", total);
    } else if(N > 1){
        assert(anyOdd);
        printf("%d\n", total - minOdd);
    } else {
        printf("NIESTETY\n");
    }
}