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Newman-Conway Sequence

The Newman-Conway sequence is a mathematical sequence defined as follows:

- `P(1) = 1`
- `P(2) = 1`
- For `n > 2`, `P(n) = P(P(n-1)) + P(n - P(n-1))`

Write a function `newman_conway(n)` that computes the nth number in the Newman-Conway sequence.

#### Example Usage
```python [main.nopy]
newman_conway(1)  # Output: 1
newman_conway(2)  # Output: 1
newman_conway(3)  # Output: 2
newman_conway(10) # Output: 6
```

#### Constraints
- The input `n` will be a positive integer greater than or equal to 1.
def newman_conway(n):
    """
    Compute the nth number in the Newman-Conway sequence.

    Args:
        n (int): The position in the sequence (1-indexed).

    Returns:
        int: The nth number in the Newman-Conway sequence.
    """
    # Base cases
    if n == 1 or n == 2:
        return 1

    # Recursive case
    # Placeholder for the actual implementation
    pass