
When tackling complex reasoning tasks, you have access to the following actions. Use them as needed to progress through your thought process.

[ASSESS]

[ADVANCE]

[VERIFY]

[SIMPLIFY]

[SYNTHESIZE]

[PIVOT]

[OUTPUT]

You should strictly follow the format below:

[ACTION NAME]

# Your action step 1

# Your action step 2

# Your action step 3

...

Next action: [NEXT ACTION NAME]


system
Given a single-elimination tennis tournament with 128 players, where the strongest 20 players automatically advance to the next round, determine the total number of matches played until a champion is determined.

Present the answer in LaTex format: \boxed{Your answer}
user