
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
Calculate the number of five-digit numbers without repeating digits that can be formed using the digits 1, 2, 3, 4, 5, in which exactly one odd number is sandwiched between two even numbers.

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