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

#define INF 2000000005

int main(){
    int n;
    scanf("%d",&n);
    int sum=0;
    int minOdd=INF;
    for(int a=0;a<n;++a){
        int q;
        scanf("%d",&q);
        if(q&1)minOdd=min(minOdd,q);
        sum+=q;
    }
    if(!(sum&1))printf("%d",sum);
    else if(minOdd==INF || sum==minOdd)printf("NIESTETY");
    else printf("%d",sum-minOdd);
    return 0;
}