Useful Links

SCT links

• Email
• Codeforces group
• Facebook group
• GitHub organization
• YouTube channel

Resources

• Samuel Hsiang's Crash Course Coding Companion
• USACO list of resources

Contests

• USA Computing Olympiad Contest Gateway
• USA Computing Olympiad Training Page
• Saratov Online Grader
• Sphere Online Judge
• ACM Problem Archive
• Internet Problem Solving Contest
• TopCoder
• North American Computational Linguistics Olympiad