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import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class kie {
	
	public static void main(String[] args) throws NumberFormatException, IOException {
		
		BufferedReader bi = new BufferedReader(new InputStreamReader(System.in));
		long sum = 0;
		long b = 0;
		long minN = 9999;
		String line;
		line = bi.readLine();
		line = bi.readLine();
		for(String nom1 : line.split("[ \t]")) {
			b = Long.parseLong(nom1);
			sum+=b;
			if(b%2==1 && minN>b)
				minN = b;
				
		}
		if(sum%2==1 && minN<9999)
			sum-=minN;
		 System.out.println(sum==0?"NIESTETY":sum);
		
	}
	
}