Complete 5 normal difficulty problems. Difficulty mastery.

Complete 15 problems in any single topic category. Topic depth.

Complete 30 problems with clean solving patterns. Anti-cheat champion.

Pass all 7 testcases on first attempt for 25 problems. Perfect submission achievement.

Complete 20 problems in 1m. Speed achievement.

Achieve average execution time < 0.1s across 25 problems. Speed efficiency.

Achieve average memory usage < 25.0MB across 25 problems. Memory efficiency.

Complete 25 easy difficulty problems. Difficulty mastery.

Complete 25 problems using C. Language mastery.

Complete 25 coding problems. Milestone achievement.

Complete 15 problems successfully after previous failures. Resilience achievement.

Complete 20 problems in a row without failures. Winning streak achievement.

Complete 10 problems in 1w. Speed achievement.

Complete 15 problems in a row without failures. Winning streak achievement.

Complete 15 problems with clean solving patterns. Anti-cheat champion.

Complete 15 coding problems. Milestone achievement.

Complete 5 problems after 3+ attempts. Shows learning and persistence.

Complete 10 problems successfully after previous failures. Resilience achievement.

Complete 10 problems in any single topic category. Topic depth.

Pass all 7 testcases on first attempt for 10 problems. Perfect submission achievement.

Complete 10 problems with at least 2 attempts each. Persistence achievement.

Complete 6 problems in 1w. Speed achievement.

Complete 5 problems between 22:00-06:00 (night time). Night coding achievement.

Complete 10 problems using C. Language mastery.

Achieve average execution time < 0.1s across 10 problems. Speed efficiency.

Achieve average memory usage < 25.0MB across 10 problems. Memory efficiency.

Achieve both execution < 0.1s AND memory < 25.0MB across 10 problems. Optimal code.

Complete 10 problems in a row without failures. Winning streak achievement.

Complete 10 easy difficulty problems. Difficulty mastery.

Complete 10 coding problems. Milestone achievement.

Complete 3 problems in 1d. Speed achievement.

Complete at least 2 problems in 3 different categories. Topic breadth.

Complete at least 3 problems in 2 different programming languages. Polyglot achievement.

Complete 2 problems in 1d. Speed achievement.

Pass all 7 testcases on first attempt for 5 problems. Perfect submission achievement.

Complete 5 problems successfully after previous failures. Resilience achievement.

Complete 5 easy difficulty problems. Difficulty mastery.

Pass all 7 testcases on first attempt for 1 problem. Perfect submission achievement.

Pass all 7 testcases on first attempt for 3 problems. Perfect submission achievement.

Achieve average execution time < 0.1s across 5 problems. Speed efficiency.

Achieve average memory usage < 25.0MB across 5 problems. Memory efficiency.

Achieve both execution < 0.1s AND memory < 25.0MB across 5 problems. Optimal code.

Complete 3 problems after 3+ attempts. Shows learning and persistence.

Complete 3 problems in a row without failures. Winning streak achievement.

Complete 5 problems in a row without failures. Winning streak achievement.

Complete 5 problems in any single topic category. Topic depth.

Complete 1 coding problem. Milestone achievement.

Complete 3 coding problems. Milestone achievement.

Complete 5 coding problems. Milestone achievement.