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Course Center

Systematic learning for informatics olympiad, from beginner to advanced

XiXi's Competitive Programming L1: Core Programming Thinking & C++ Fundamentals

XiXi's Competitive Programming L1: Core Programming Thinking & C++ Fundamentals

16 lessons9 hours

CSP-J entry-level course covering GESP Levels 1–2. Master core programming thinking and C++ fundamentals.

Course DocsStudy Plan
XiXi's Competitive Programming L2: CSP-J Basic Algorithms & Data Structures

XiXi's Competitive Programming L2: CSP-J Basic Algorithms & Data Structures

24 lessons16 hours

CSP-J foundational course covering GESP Levels 3–4. Learn basic algorithms and data structures.

Course DocsStudy Plan
XiXi's Competitive Programming L3: CSP-J Advanced Algorithms & Data Structures

XiXi's Competitive Programming L3: CSP-J Advanced Algorithms & Data Structures

54 lessons25 hours

CSP-J advanced course covering GESP Levels 5–8. In-depth study of advanced algorithms and data structures.

Course DocsStudy Plan
XiXi's Competitive Programming L4: CSP-S Senior Division Systematic Course

XiXi's Competitive Programming L4: CSP-S Senior Division Systematic Course

81 lessons31 hours

CSP-S/NOIP systematic course. Prepare for provincial competitions with mastery of graph theory, dynamic programming and other advanced algorithms.

Course DocsStudy Plan

CSP-J Preliminary Sprint

22 lessons5 hours

Comprehensive CSP-J preliminary exam preparation covering computer basics, data structures, algorithms, encoding and number theory

Course DocsStudy Plan