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#include <cstdio>
#include <iostream>
#define FOR(i,a,b) for (int i = a; i <= b; ++i)
#define REP(i,n) for (int i = 0; i < n; ++i)

using namespace std;

int main() {
    int minnp = 1000001;
    int sum = 0;
    int n, x;
    scanf("%d", &n);
    REP(i,n) {
        scanf("%d", &x);
        sum += x;
        if (x % 2 == 1) {
            minnp = min(minnp, x);
        }
    }
    if (sum % 2 == 0) {
        printf("%d", sum);
    }
    else {
        if (n == 1) {
            printf("NIESTETY");
        }
        else {
            printf("%d", sum - minnp);
        }
    }
    return 0;
}