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#include <stdio.h>
using namespace std;

int main(void){
    int n,i,suma=0;
    int min_nparz=1001;
    scanf("%d",&n);
    int tmp;
    for(i=0;i<n;i++){
        scanf("%d",&tmp);
        suma+=tmp;
        if(tmp%2==1&&tmp<min_nparz) min_nparz=tmp;
    }
    if(suma%2==0) {printf("%d",suma);return 0;}
    else {
        suma-=min_nparz;
        if(suma==0){printf("NIESTETY"); return 0;}
        else {printf("%d", suma); return 0;}
    }
}