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Contest - Contest20111210

Start time:  2011-12-10 09:00:00  End time:  2011-12-10 14:00:00
Current System Time:  2023-09-30 14:50:07.649  Contest Status:   Ended

Do not answer the problems with special judge! Thanks!
Problem ID Title
4011 Problem A Automated Telephone Exchange
4012 Problem B Black Square
4013 Problem C Cube Coloring
4014 Problem D Dice
4015 Problem E Electrification
4016 Problem F Flat
4017 Problem G Galaxy Interconnection
4018 Problem H High security
4019 Problem I Immediate Delivery
4020 Problem J John's Inversions
4021 Problem K Kids Like Cakes

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