發送短信 : On the Rainbow Mean Indexes of Caterpillars

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