/* 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
	{
		// your code goes here
		char[] cs = new char[0x10000];
 		for (int i = 0; i < 0x10000; i++) {
			cs[i] = (char)i;
		}
		Random rand = new Random();
		for (int i = cs.length-1; i > 0; i--) {
			int j = rand.nextInt(i+1);
			char c = cs[i];
			cs[i] = cs[j];
			cs[j] = c;
		}
		String s = new String(cs);
		for (char c : s.toCharArray()) {
			if ('A' <= c && c <= 'Z')
				System.out.print(c);
		}
	}
}

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