import java.util.*;
public class App {
public static void main(String[] args) {
HashMap p = new HashMap();
p.put(7,"A");
p.put(1,"B");
p.put(5,"C");
p.put(1,"D");
p.remove(1);
System.out.println(p);
String[] sa = {"tom ", "jerry "};
for (int x = 0; x < 3; x++) {
for (String s : sa) {
System.out.print(x + " " + s);
if (x == 1) {
break;
}
}
}
}
}