أرسل هذا في رسالة قصيرة: Queuing systems (in hospitals)

  _  _    _    _     _____    _    _    _____    
 | \| || | || | ||  / ____|| | || | || |  __ \\  
 |  ' || | || | || / //---`' | || | || | |  \ || 
 | .  || | \\_/ || \ \\___   | \\_/ || | |__/ || 
 |_|\_||  \____//   \_____||  \____//  |_____//  
 `-` -`    `---`     `----`    `---`    -----`