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

int n;
int suma;
int minim=1000000009;
int tmp;

int main(){
    scanf("%d",&n);
    for(int i=0;i<n;i++){
        scanf("%d",&tmp);
        suma+=tmp;
        if(tmp%2) minim=min(minim,tmp);
    }
    if(suma%2) suma-=minim;
    if(suma>0) printf("%d",suma);
    else printf("NIESTETY");
}