
    Write a function that activates all high-priority delivery slots in a fleet's routing system, where high-priority slots are represented by even bit positions in the binary route status. The function should set all even-positioned bits to 1 while preserving the existing state of odd-positioned bits, effectively marking these slots for immediate attention in the dynamic routing system.
    

    
def even_bit_set_number(n):
    """
    Write a function that activates all high-priority delivery slots in a fleet's routing system, where high-priority slots are represented by even bit positions in the binary route status. The function should set all even-positioned bits to 1 while preserving the existing state of odd-positioned bits, effectively marking these slots for immediate attention in the dynamic routing system.
    

    """
def even_bit_set_number(n):
    """
    Write a function that activates all high-priority delivery slots in a fleet's routing system, where high-priority slots are represented by even bit positions in the binary route status. The function should set all even-positioned bits to 1 while preserving the existing state of odd-positioned bits, effectively marking these slots for immediate attention in the dynamic routing system.
    

    """
    count = 0
    res = 0
    temp = n
    while temp > 0:
        if count % 2 == 1:
            res |= 1 << count
        count += 1
        temp >>= 1
    return n | res