
    Given a binary representation of bus route segments where 1 indicates an active route and 0 indicates an inactive route, develop a function that activates the leftmost inactive route segment to expand service coverage efficiently. The function should identify the first inactive route segment from the left (most significant position) and activate it by setting its value to 1, helping transportation managers optimize route coverage based on demand patterns.
    

    
def set_left_most_unset_bit(n):
    """
    Given a binary representation of bus route segments where 1 indicates an active route and 0 indicates an inactive route, develop a function that activates the leftmost inactive route segment to expand service coverage efficiently. The function should identify the first inactive route segment from the left (most significant position) and activate it by setting its value to 1, helping transportation managers optimize route coverage based on demand patterns.
    

    """
def set_left_most_unset_bit(n):
    """
    Given a binary representation of bus route segments where 1 indicates an active route and 0 indicates an inactive route, develop a function that activates the leftmost inactive route segment to expand service coverage efficiently. The function should identify the first inactive route segment from the left (most significant position) and activate it by setting its value to 1, helping transportation managers optimize route coverage based on demand patterns.
    

    """
    if not n & n + 1:
        return n
    (pos, temp, count) = (0, n, 0)
    while temp:
        if not temp & 1:
            pos = count
        count += 1
        temp >>= 1
    return n | 1 << pos