Get Average Standing

Problem Overview

• Compute each player's average standing across car game races from event records.
• Input: d players and records [race_id, player_id, player_time]; Output: for each player, p and q of the reduced average-standing fraction, or -1 and -1 if they never raced.
• For each race, rank by increasing finish time; if times tie, the lower player id receives the worse rank.
• Real-world domain: Amazon Games result analysis; an Amazon interviews coding interview problem and interview question.