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Power of CryptographyBackgroundCurrent work in cryptography involves (among other things) large prime numbers and computing powers of numbers modulo f...    阅读全文
posted @ 2013-02-24 10:37
Gifur
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Problem A.Ant on a ChessboardBackgroundOne day, an ant called Alice came to an M*M chessboard. She wanted to go around all the grids. So she began to ...    阅读全文
posted @ 2013-02-24 10:00
Gifur
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