Participant: dragon11

Representing China using C++.

Qualification Round: ranked 2900 (50 points)
Saving the UniverseTrain TimetableFly Swatter
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Round 1A: ranked 1640 (5 points)
Minimum Scalar ProductMilkshakesNumbers
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Round 1B: ranked 895 (15 points)
Crop TrianglesNumber SetsMousetrap
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