
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
There are 28 identical coins arranged in the shape of a triangle. It is known that the total mass of any trio of coins that touch each other in pairs is 10 g. Find the total mass of all 18 coins on the border of the triangle.

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