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

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發送短信 : Maximum coverage of radius-one sources in the wireless communication