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#include<bits/stdc++.h>
using namespace std;
int main(){
    int n,suma=0,minn=1e9;
    scanf("%d",&n);
    while(n--){
        int x; scanf("%d",&x);
        suma+=x;
        if(x%2==1)minn=min(minn,x);
    }
    if(suma%2==1)suma-=minn;
    if(suma==0)puts("NIESTETY");
    else printf("%d",suma);

    return 0;
}