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IMPORTANT: Read the notice in the Problem descriptions tab (reload it if necessary)
Rujia Liu's Present 7: Hello, interactive problems!

Problems

Title Time Limit (sec)
A Mysterious Space Station 3.000
B Guess the Fake Coin 3.000
C Guess the Fake Coin II 6.000
D Guess the String 3.000
E Guess the Missing Number 3.000
F Guess the Convex Polygon 3.000
G Team star, Team moon 3.000
H Explore the Dune 3.000
I Xmas Gift 6.000
J Stone Age 3.000
K Weights of Toys 3.000
L Mining in Starcraft 15.000

Problem descriptions

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