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#include <bits/stdc++.h>
using namespace std;

int main()
{
    int n;
    int mini=1000006;
    int suma=0;
    int a;

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

    return 0;
}