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  ______     ___      _  _      ___      _____   
 /_____//   / _ \\   | \| ||   / _ \\   |__  //  
 `____ `   | / \ ||  |  ' ||  / //\ \\    / //   
 /___//    | \_/ ||  | .  || |  ___  ||  / //__  
 `__ `      \___//   |_|\_|| |_||  |_|| /_____|| 
 /_//       `---`    `-` -`  `-`   `-`  `-----`  
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Text this: On rainbow vertex antimagic coloring and its application to the encryption keystream construction