import java.io.*;
import java.util.*;
public class Text{
	public static void main(String argumendid[]) throws IOException{
		BufferedReader in=new BufferedReader(new FileReader("a.txt"));
		String s=in.readLine();
		String maxs="";
		int max=0;
		while(s!=null){
			StringTokenizer stk=new StringTokenizer(s, " ");
			while(stk.hasMoreTokens()){
				String s2=stk.nextToken();
				if(s2.length()>max){
					max=s2.length();
					maxs=s2;
				}
			}
			s=in.readLine();
		}
		System.out.println("The longest word: "+maxs);
	}
}