University of Chicago Practice Contests -- practice07
Problem A - Largest Empty Circle on a Segment
No solutions available
Source: Problem C from South Eastern European Regional Contest 2010 [Scoreboard]
Problem B - Risk
No solutions available
Source: Problem F from North West European 2010 [Scoreboard]
Problem C - Roller Coaster
Solutions
Source: Problem F from Mid-Atlantic North America 2010 [Scoreboard not available]
Problem D - Problemsetting
No solutions available
Source: Problem D from South Eastern European Regional Contest 2010 [Scoreboard]
Problem E - Telephone Network
No solutions available
Source: Problem I from North West European 2010 [Scoreboard]
Problem F - Gamers
No solutions available
Source: Problem F from South Eastern European Regional Contest 2010 [Scoreboard]
Problem G - Wormly
No solutions available
Source: Problem J from North West European 2010 [Scoreboard]
Problem H - Cosmic Station
No solutions available
Source: Problem G from South Eastern European Regional Contest 2010 [Scoreboard]
Problem I - Proof Generator
No solutions available
Source: Problem I from South Eastern European Regional Contest 2010 [Scoreboard]
Problem J - Free Goodies
No solutions available
Source: Problem B from North West European 2010 [Scoreboard]
Problem K - Railroad
No solutions available
Source: Problem G from Rocky Mountain North America 2010 [Scoreboard]