import java.util.TreeMap;
public class MyClass {
public static void main(String args[]) {
TreeMap<Integer, String> treemap = new TreeMap<Integer, String>();
treemap.put(4, "java");
treemap.put(2, "c++");
treemap.put(5, "python");
treemap.put(3, "c#");
if (!treemap.isEmpty()){
System.out.println(treemap.lastEntry().getValue());
}
}
}
/*
run:
python
*/