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Difference Between Sum of Cubes and Sum

Write a Python function `difference(n)` that calculates the difference between the sum of the cubes of the first `n` natural numbers and the sum of the first `n` natural numbers.

#### Example Usage
```python [main.nopy]
print(difference(3))  # Output: 30
print(difference(5))  # Output: 210
print(difference(2))  # Output: 6
```

#### Constraints
- The input `n` will be a positive integer.
def difference(n):
    """
    Calculate the difference between the sum of the cubes of the first n natural numbers
    and the sum of the first n natural numbers.

    Args:
    n (int): A positive integer.

    Returns:
    int: The calculated difference.
    """
    # Placeholder for the solution
    pass
Intermediate mathfunctionsloops
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