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

int main() {
    int n;
    scanf("%d", &n);

    int suma = 0, m = 2*1000*1000*1000, a;
    for(int i = 0; i < n; i++)
    {
        scanf("%d", &a);
        suma+=a;
        if( a % 2 == 1)
            m = min(m, a);
    }
    if(suma%2 == 0)
        printf("%d\n", suma);
    else
        if(m % 2 == 1)
            if( suma - m == 0)
                printf("NIESTETY\n");
            else
                printf("%d\n", suma-m);
        else
            printf("NIESTETY\n");
    return 0;
}