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#include <stdio.h>
static inline int is_odd_A(int x) { return x & 1; }

int main()
{
    int n;
    scanf("%d",&n);
    unsigned int sum=0;
    unsigned int min = 2147483647;


    int i, current;
    if(n==1) {
        scanf("%d",&current);
        if(is_odd_A(current)) printf("NIESTETY\n");
        else printf("%d\n",current);
        return 0;
    }



    for(i=0; i< n; ++i) {
        scanf("%d",&current);
        sum+= current;
        if(is_odd_A(current) && min > current) min = current;
    }

    if(is_odd_A(sum)) sum-= min;

    printf("%d\n",sum);

    return 0;
}