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Contest has finished at 2010-07-31 17:00.

ID Problem
A 草稿纸 2
B 草稿纸 3
C Baihacker and Oml
D Nim
E Nim or not Nim
F Flip Coins
G Black and white chess
H game
I windy和水星 -- 水星游戏 1
J windy和水星 -- 水星游戏 2
K Number Game
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