
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
Two trains, each consisting of 20 identical cars, were moving towards each other on parallel tracks at constant speeds. Exactly 36 seconds after the meeting of their first cars, passenger Vova, sitting in the fourth car of his train, came abreast with passenger Oleg in the oncoming train, and 44 seconds later the last cars of the trains completely passed each other. In which car was Oleg traveling?

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