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  ______     ___     _____       ___              
 /_____//   / _ \\  |  __ \\    / _ \\      ___   
 `____ `   | / \ || | |  \ ||  / //\ \\    /   || 
 /___//    | \_/ || | |__/ || |  ___  ||  | [] || 
 `__ `      \___//  |_____//  |_||  |_||   \__ || 
 /_//       `---`    -----`   `-`   `-`     -|_|| 
 `-`                                         `-`

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發送短信 : RANDOM WALKS, TRANSIENCE, RECURRENCE AND COLLISIONS