
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
A family of 4 people, consisting of a mom, dad, and two children, arrived in city $N$ for 5 days. They plan to make 10 trips on the subway each day. What is the minimum amount they will have to spend on tickets if the following rates are available in city $N$?

| Adult ticket for one trip | 40 rubles |
| --- | --- |
| Child ticket for one trip | 20 rubles |
| Unlimited day pass for one person | 350 rubles |
| Unlimited day pass for a group of up to 5 people | 1500 rubles |
| Unlimited three-day pass for one person | 900 rubles |
| Unlimited three-day pass for a group of up to 5 people | 3500 rubles |

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