/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		ArrayList<String> a = new ArrayList<String>();
        a.add("A");
        a.add("B");
        a.add("C");
        System.out.println(a.toString().replaceAll("[\\[\\]\\s]", ""));
	}
}

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