import java.util.HashMap;
import java.util.Map;
class Counter {
int i = 1;
public String toString() {
return Integer.toString(i);
}
}
public class Main {
public static void main(String[] args) {
Map hm = new HashMap();
for (int i = 0; i < 10; i++) {
Integer r = new Integer(20);
if (hm.containsKey(r))
((Counter) hm.get(r)).i++;
else
hm.put(r, new Counter());
}
System.out.println(hm);
}
}
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