Solution — Cs50 Tideman

This happens when your sort_pairs is wrong. If the pairs are not sorted in the correct order, the algorithm tries to lock a strong pair out of order, breaking the logic. Fix your sorting margin calculation.

The problem is widely considered one of the most difficult challenges in Harvard’s introductory computer science course. It requires students to implement "Ranked Pairs," a Condorcet voting system that determines a winner by analyzing head-to-head matchups and preventing cyclical outcomes like Rock-Paper-Scissors. Cs50 Tideman Solution

This is the function that causes 90% of the help requests on the CS50 Subreddit. The goal: Lock a pair (add it to locked[winner][loser] = true ) it would create a cycle. This happens when your sort_pairs is wrong