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import java.io.IOException;
import java.io.InputStream;
import java.io.PrintStream;


public class kie {

	public static void main(String[] args) throws IOException {
		InputStream inputStream = System.in;
		PrintStream printStream = System.out;
		
		new AllowanceCalculator(inputStream, System.getProperty("line.separator")).respond(printStream);
	}
	
	static class AllowanceCalculator {
		
		private BillsReader billsReader;
		
		public AllowanceCalculator(InputStream inputStream, String lineSeparator) throws IOException {
			billsReader = new BillsReader(inputStream, lineSeparator);
		}
		
		public int calculateMaxAllowaneSum() throws IOException {
			int maxAllowanceSum = 0;
			int[] bills = billsReader.readBills();
			int minUneven = Integer.MAX_VALUE;
			
			for(int i = 0;i < bills.length;i++) {
				int bill = bills[i];
				maxAllowanceSum += bill;
				if(isUneven(bill) && minUneven > bill) {
					minUneven = bill;
				}
			}
			
			if(isUneven(maxAllowanceSum)) {
				return maxAllowanceSum - minUneven;
			}
			
			return maxAllowanceSum;
		}
		
		public void respond(PrintStream printStream) throws IOException {
			int maxAllowanceSum = calculateMaxAllowaneSum();
			if(maxAllowanceSum > 0) {
				printStream.print(maxAllowanceSum);
			} else {
				printStream.print("NIESTETY");
			}
		}
		
		boolean isUneven(int number) {
			return (number & 1) == 1;
		}
	}
	
	static class BillsReader {
		
		private SimpleStringParser simpleStringParser;
		private SimpleNumber simpleNumber;
		
		public BillsReader(InputStream inputStream, String lineSeparator) throws IOException {
			simpleStringParser = new SimpleStringParser(10000, inputStream);
			simpleNumber = new SimplePositiveInteger(lineSeparator);
		}
		
		public int[] readBills() throws IOException {
			int n = simpleNumber.parseLastInt(simpleStringParser, true) - 1;
			int[] bills = new int[n + 1];
			for(int i = 0;i < n;i++) {
				bills[i] = simpleNumber.parseInt(simpleStringParser);
			}
			bills[n] = simpleNumber.parseLastInt(simpleStringParser, false);
			
			return bills;
		}
	}
	
	private static abstract class SimpleNumber {
		protected static final int ZERO = '0';
		protected static final int SPACE = ' ';
		protected final String lineSeparator;
		protected final char beginOfLineSeparator;
		
		public SimpleNumber(String lineSeparator) {
			this.lineSeparator = lineSeparator;
			beginOfLineSeparator = lineSeparator.charAt(0);
		}
		
		public int parseInt(SimpleStringParser simpleStringParser) throws IOException {throw new UnsupportedOperationException();}
		public int parseLastInt(SimpleStringParser simpleStringParser, boolean hasMore) throws IOException {throw new UnsupportedOperationException();}
	}
	
	private static class SimplePositiveInteger extends SimpleNumber {
		
		public SimplePositiveInteger(String lineSeparator) {
			super(lineSeparator);
		}
		
		@Override
		public int parseInt(final SimpleStringParser simpleStringParser) throws IOException {
			if(simpleStringParser.nextChunkOfDataRequired()) {
				simpleStringParser.nextChunkOfData();
			}
			if(simpleStringParser.array[simpleStringParser.index] == SPACE) {
				++simpleStringParser.index;
			}
			if(simpleStringParser.nextChunkOfDataRequired()) {
				simpleStringParser.nextChunkOfData();
			}
			int integer = simpleStringParser.array[simpleStringParser.index++] - ZERO;
			int value;
			if(simpleStringParser.nextChunkOfDataRequired()) {
				simpleStringParser.nextChunkOfData();
			}
			while((value = simpleStringParser.array[simpleStringParser.index]) != SPACE) {
				integer *= 10;
				integer += value - ZERO;
				++simpleStringParser.index;
				if(simpleStringParser.nextChunkOfDataRequired()) {
					simpleStringParser.nextChunkOfData();
				}
			}
			return integer;
		}
		
		@Override
		public int parseLastInt(final SimpleStringParser simpleStringParser, final boolean hasMore) throws IOException {
			if(simpleStringParser.nextChunkOfDataRequired()) {
				simpleStringParser.nextChunkOfData();
			}
			if(simpleStringParser.array[simpleStringParser.index] == SPACE) {
				++simpleStringParser.index;
			}
			if(simpleStringParser.nextChunkOfDataRequired()) {
				simpleStringParser.nextChunkOfData();
			}
			int integer = simpleStringParser.array[simpleStringParser.index++] - ZERO;
			int value;
			if(simpleStringParser.nextChunkOfDataRequired()) {
				simpleStringParser.nextChunkOfData();
			}
			while((value = simpleStringParser.array[simpleStringParser.index]) != beginOfLineSeparator) {
				integer *= 10;
				integer += value - ZERO;
				++simpleStringParser.index;
				if(simpleStringParser.nextChunkOfDataRequired()) {
					simpleStringParser.nextChunkOfData();
				}
			}
			if(hasMore) {
				simpleStringParser.index += lineSeparator.length();
				if(simpleStringParser.nextChunkOfDataRequired()) {
					simpleStringParser.nextChunkOfData();
					for(int i = 0;i < lineSeparator.length();++i) {
						if(simpleStringParser.array[i] == lineSeparator.charAt(i)) {
							++simpleStringParser.index;
						}
					}
				}
			}
			return integer;
		}
	}
	
	private static class SimpleStringParser {
		int index = 0;
		final byte[] array;
		int bytesReaded;
		final InputStream inputStream;
		
		public SimpleStringParser(final int arraySize, final InputStream inputStream) throws IOException {
			array = new byte[arraySize];
			this.inputStream = inputStream;
			bytesReaded = inputStream.read(array);
		}
		
		protected final void nextChunkOfData() throws IOException {
			bytesReaded = inputStream.read(array);
			index = 0;
		}
		
		protected final boolean nextChunkOfDataRequired() {
			return bytesReaded <= index;
		}
		
	}
}