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// Krzysztof Małysa
#include <bits/stdc++.h>
#include <unistd.h>

using namespace std;

#define FOR(i,a,n) for (int i = (a), __n ## i = n; i < __n ## i; ++i)
#define REP(i,n) FOR(i,0,n)
#define FORD(i,a,n) for (int i = (a), __n ## i = n; i >= __n ## i; --i)
#define LET(x,a) __typeof(a) x = (a)
#define FOREACH(i,x) for (LET(i, x.begin()), __n##i = x.end(); i != __n##i; ++i)
#define ALL(x) x.begin(), x.end()
#define SZ(x) (int(x.size()))
#define eprintf(...) fprintf(stderr, __VA_ARGS__)
#define ST first
#define ND second
#define MP make_pair
#define PB push_back
#define O(...) ostream& operator <<(ostream& os, const __VA_ARGS__& x)
#define OO(...) O(__VA_ARGS__) { return __out(os, ALL(x)); }
#define T template
#define CL class

typedef unsigned uint;
typedef long long LL;
typedef unsigned long long ULL;
typedef vector<int> VI;
typedef vector<VI> VVI;
typedef vector<LL> VLL;
typedef pair<int, int> PII;
typedef vector<PII> VPII;
typedef vector<VPII> VVPII;
typedef pair<LL, LL> PLLLL;
typedef vector<PLLLL> VPLLLL;
typedef vector<bool> VB;
typedef vector<char> VC;
typedef vector<string> VS;

T<CL A>
inline A abs(const A& a) { return a < A() ? -a : a; }

T<CL A, CL B>
inline void mini(A& a, const B& b) {
	if (b < a)
		a = b;
}

T<CL A, CL B>
inline void maxi(A& a, const B& b) {
	if (b > a)
		a = b;
}

T<CL Iter>
ostream& __out(ostream& os, Iter a, Iter b, const string& s = ", ");

T<CL A, CL B>
O(pair<A, B>);

T<CL A>
OO(vector<A>)

T<CL A>
OO(deque<A>)

T<CL A>
OO(list<A>)

T<CL A, CL B>
OO(set<A, B>)

T<CL A, CL B, CL C>
OO(map<A, B, C>)

T<CL A, CL B>
OO(multiset<A, B>)

T<CL A, CL B, CL C>
OO(multimap<A, B, C>)

T<CL Iter>
ostream& __out(ostream& os, Iter a, Iter b, const string& s) {
	os << "{";
	if (a != b) {
		os << *a;
		while (++a != b)
			os << s << *a;
	}
	return os << "}";
}

T<CL A, CL B>
O(pair<A, B>) {
	return os << "(" << x.ST << ", " << x.ND << ")";
}

CL Input {
	static const int BUFF_SIZE = 1 << 16;
	unsigned char buff[BUFF_SIZE], *pos, *end;

	void grabBuffer() {
		pos = buff;
		end = buff + read(0, buff, BUFF_SIZE);
	}

public:
	Input() : pos(buff), end(buff) {}

	int peek() {
		if (pos == end)
			grabBuffer();
		return pos != end ? *pos : -1;
	}

	int getChar() {
		if (pos == end)
			grabBuffer();
		return pos != end ? *pos++ : -1;
	}

	void skipWhiteSpaces() {
		while (isspace(peek()))
			++pos;
	}

	T<CL A>
	A get();

	void operator()(char* s) {
		skipWhiteSpaces();
		while (!isspace(peek()))
			*s++ = *pos++;
		*s = '\0';
	}

	T<CL A>
	void operator()(A& x) { x = get<A>(); }

	T<CL A, CL B>
	void operator()(A& a, B& b) { operator()(a), operator()(b); }

	T<CL A, CL B, CL C>
	void operator()(A& a, B& b, C& c) { operator()(a, b), operator()(c); }

	T<CL A, CL B, CL C, CL D>
	void operator()(A& a, B& b, C& c, D& d) {
		operator()(a, b, c);
		operator()(d);
	}

	T<CL A, CL B, CL C, CL D, CL E>
	void operator()(A& a, B& b, C& c, D& d, E& e) {
		operator()(a, b, c, d);
		operator()(e);
	}

	T<CL A, CL B, CL C, CL D, CL E, CL F>
	void operator()(A& a, B& b, C& c, D& d, E& e, F& f) {
		operator()(a, b, c, d, e);
		operator()(f);
	}

	Input& operator>>(char *s) {
		operator()(s);
		return *this;
	}

	T<CL A>
	Input& operator>>(A& a) {
		operator()(a);
		return *this;
	}
} fin;

T<> char Input::get<char>() {
	skipWhiteSpaces();
	return *pos++;
}

T<> uint Input::get<uint>() {
	skipWhiteSpaces();
	uint x = 0;
	while (isdigit(peek()))
		x = x * 10 + *pos++ - '0';
	return x;
}

T<> int Input::get<int>() {
	skipWhiteSpaces();
	return peek() == '-' ? (++pos, -get<uint>()) : get<uint>();
}

T<> ULL Input::get<ULL>() {
	skipWhiteSpaces();
	ULL x = 0;
	while (isdigit(peek()))
		x = x * 10 + *pos++ - '0';
	return x;
}

T<> LL Input::get<LL>() {
	skipWhiteSpaces();
	return peek() == '-' ? (++pos, -get<ULL>()) : get<ULL>();
}

T<> string Input::get<string>() {
	skipWhiteSpaces();
	string x;
	while (!isspace(peek()))
		x += *pos++;
	return x;
}

#undef T
#undef CL
#ifdef DEBUG
# define D(...) __VA_ARGS__
# define E(...) eprintf(__VA_ARGS__)
# define OUT(a,b) cerr << #a ":", __out(cerr, a, b), E("\n")
# define LOG(x) cerr << #x ": " << (x)
# define LOG2(x, y) cerr << x ": " << (y)
# define LOGN(x) LOG(x) << endl
# define LOGN2(x, y) LOG2(x, y) << endl
#else
# define D(...)
# define E(...)
# define OUT(...)
# define LOG(...)
# define LOG2(...)
# define LOGN(...)
# define LOGN2(...)
#endif
/// End of templates

int main() {
	int n, a, sum = 0, min_odd = 1 << 30;
	fin >> n;
	REP (i, n) {
		fin >> a;
		sum += a;
		if (a & 1)
			mini(min_odd, a);
	}
	if (sum & 1) {
		sum -= min_odd;
		if (n == 1) {
			puts("NIESTETY\n");
			return 0;
		}
	}

	printf("%i\n", sum);
	return 0;
}
/*
5
2 4 3 3 3

1
5

*/