It may be necessary to wait for caches to update

Proving is not the same as testing! Let us wait for the caches to update.

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  1. import math

    # — 1. SETS: Tracking ‘Interesting’ Coordinates —
    # We use a set for O(1) membership testing to highlight specific nodes.
    special_nodes = {(31, 15), (63, 31), (256, 128)}

    # — 2. DICTIONARIES: The Sparse Map Architecture —
    # Instead of a dense 2D array, we map Tuples (n, k) to their properties.
    # This saves memory for a 256-row map where we only peek at specific windows.
    triangle_metadata = {
    (0, 0): {“label”: “The Origin”, “type”: “root”},
    (31, 15): {“label”: “Mersenne Midpoint”, “type”: “target”},
    (63, 31): {“label”: “Grand Midpoint”, “type”: “target”}
    }

    def get_node_data(n, k):
    “””
    Demonstrates Exception Handling and Dictionary lookup.
    “””
    try:
    # Check if coordinates are mathematically valid
    if not (0 <= k <= n):
    raise ValueError(f"Coordinate ({n}, {k}) is outside the triangle bounds.")

    # Calculate the actual value using high-precision BigInts
    val = math.comb(n, k)

    # Check our dictionary for extra metadata
    meta = triangle_metadata.get((n, k), {"label": "Standard Node", "type": "none"})

    # 3. F-STRINGS: High-Precision Formatting
    # We demonstrate converting the giant integer into comma-separated strings
    return {
    "coord": (n, k),
    "value_str": f"{val:,}",
    "digits": len(str(val)),
    "info": f"Node [{n},{k}]: {meta['label']} ({meta['type']})"
    }
    except ValueError as e:
    return {"error": str(e)}

    # — 4. LIST COMPREHENSIONS: Generative Logic —
    # Creating an entire 'View' of the 256th row in one go.
    def analyze_row(n):
    # This single line performs high-precision calculations for the entire row.
    row_values = [math.comb(n, k) for k in range(n + 1)]

    # Use built-in functions to summarize the row data
    return {
    "max_val": max(row_values),
    "total_sum": sum(row_values), # Should be 2^n
    "is_power_of_two": sum(row_values) == 2**n
    }

    # — 5. TUPLES & LOOPS: Simulating a Path —
    def simulate_path(n_target, k_target):
    """
    Generates a list of (n, k) tuples representing a path from top to target.
    Shows off List appending and coordinate tracking.
    """
    current_n, current_k = 0, 0
    path = [(0, 0)]

    # Logic to 'walk' down the triangle towards the target coordinate
    while current_n < n_target:
    current_n += 1
    # Biased walk logic: move 'right' (k+1) only if behind target ratio
    if current_k < k_target and (current_k / current_n < k_target / n_target):
    current_k += 1
    path.append((current_n, current_k))
    return path

    # — 6. AGGREGATION & SUMMARY —
    def generate_report(target_rows):
    """
    Final demonstration of dictionary iteration and complex f-strings.
    """
    report = []
    for r in target_rows:
    data = analyze_row(r)
    # Showing nested dictionary values and precision formatting
    line = f"Row {r:3}: Max Digits={len(str(data['max_val'])):3} | Sum=2^{r}"
    report.append(line)
    return "\n".join(report)

    # Execution block for the Pyodide environment
    if __name__ == "__main__":
    # Test the logic for the specific request (31 and 63)
    results_31 = get_node_data(31, 15)
    results_63 = get_node_data(63, 31)

    print("— 256-Row Map Engine Test —")
    print(results_31['info'], "| Digits:", results_31['digits'])
    print(results_63['info'], "| Digits:", results_63['digits'])

    # Demonstrate the 256th row capabilities
    row_256 = analyze_row(256)
    print(f"\nRow 256 check: Sum is 2^256? {row_256['is_power_of_two']}")
    # Calculate the middle value (256, 128)
    mid_val = math.comb(256, 128)
    print(f"Middle Value (256,128) has {len(str(mid_val))} digits.")
    print("First 10 digits:", str(mid_val)[:10])

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