Count of Matches in Tournament
This problem is about simulating a tournament with particular rules for pairing teams and determining the total number of matches played until a winner is decided.
Approach
Initialize a Counter: Start with a variable, say
matches
, to keep track of the total number of matches played. Initialize it to 0.Simulate the Tournament: Repeat the following process as long as there are more than 1 team:
 Even Number of Teams: If the number of teams is even, pair them and play
n / 2
matches. Half the teams will advance to the next round.  Odd Number of Teams: If the number of teams is odd, randomly advance one team, and pair the rest. Play
(n  1) / 2
matches, and(n  1) / 2 + 1
teams advance.  Update the Counter: Add the number of matches played in the current round to
matches
.
 Even Number of Teams: If the number of teams is even, pair them and play
Return the Result: Return the total number of matches played, i.e., the value of
matches
.


Key Takeaways
 We use a simple simulation to keep track of the number of matches played.
 At each round, the number of matches depends on whether the number of teams is even or odd.
 This solution follows the problem’s rules and provides the correct number of matches played to decide a winner in the given tournament scenario.