import java.util.Map;
import java.util.HashMap;

public class HashMapDemo{
	public static void main(String[] args){
		Map<String, Integer> argMap = new HashMap<String, Integer>();
		for(String arg: args){
			Integer count = argMap.get(arg);
			argMap.put(arg, (count == null)? 1 : count + 1);
		}
		
		System.out.println(argMap);
		System.out.println("Number of distinct arguments = " + argMap.size());
	}
}