import java.util.*;
import java.util.zip.*;
import java.util.List;
import java.util.regex.*;
import java.util.concurrent.*;
import java.util.concurrent.atomic.*;
import java.util.concurrent.locks.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.text.*;
import javax.swing.table.*;
import java.io.*;
import java.net.*;
import java.lang.reflect.*;
import java.lang.ref.*;
import java.lang.management.*;
import java.security.*;
import java.security.spec.*;
import java.awt.*;
import java.awt.event.*;
import java.awt.image.*;
import javax.imageio.*;
import java.math.*;
class main {

static String unicode_blackVerticalRectangle() {
  return unicode("25AE");
}
static String unicode(String hex) {
  return codePointToString(parseHexInt(hex));
}



static String codePointToString(int codePoint) {
  return new String(Character.toChars(codePoint));
}

static int parseHexInt(String s) {
  return hexToInt(s);
}



static int hexToInt(String s) {
  return Integer.parseInt(s, 16);
}


}