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Alice and Bob need to send secret messages to each other and are discussing ways to encode their messages: Alice: “Let’s just use a very simple code: 阅读全文
posted @ 2017-02-27 21:42
duskcloudxu
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Farmer John has built a new long barn, with N (2 <= N <= 100,000) stalls. The stalls are located along a straight line at positions x1,...,xN (0 <= xi 阅读全文
posted @ 2017-02-27 15:33
duskcloudxu
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Ivan, Filbert, and Tracy really like nuts. They can eat nuts without stopping all day long if they want to. Today they decided to buy some nuts so eac 阅读全文
posted @ 2017-02-27 14:02
duskcloudxu
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