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baihacker's birthday invitation contest

The descriptions of problem D and E have been updated where is colored by red.
Contest has finished at 2009-11-21 23:00.

ID Problem
A Lambda-Calculus
B Type Derivation
C Distance
D Area Coordinates I
E Area Coordinates II
F A Funy Stone Game
G Distribute The Apples III
H 1957 Number I
I 1957 Number II
J The Winner
K Happy Children's Day
L Drawing Lines
M K Lovely Permutation
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