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#include <cstdio>
#include <iostream>
using namespace std;

#define UNDEF 1001

int main()
{
    int n, sum = 0;
    int minodd = UNDEF;
    
    scanf("%d", &n);
    for(int i = 1; i <= n; i++)
    {
        int a;
        scanf("%d", &a);
        sum += a;
        if(a % 2 == 1)
            minodd = min(minodd, a);
    }
    if(sum % 2 == 0)
        printf("%d\n", sum);
    else if(minodd != UNDEF && sum-minodd > 0)
        printf("%d\n", sum-minodd);
    else
        printf("NIESTETY\n");
}