
    In a social network's friend recommendation system, develop a function that modifies a user's binary profile signature by activating all even-positioned social metrics, where each bit represents different social attributes like activity levels and interaction patterns. The function should take a binary number representing the user's current social metrics and return a new value with all even-positioned bits set to 1, while preserving the original odd-positioned bits.
    

    
def even_bit_set_number(n):
    """
    In a social network's friend recommendation system, develop a function that modifies a user's binary profile signature by activating all even-positioned social metrics, where each bit represents different social attributes like activity levels and interaction patterns. The function should take a binary number representing the user's current social metrics and return a new value with all even-positioned bits set to 1, while preserving the original odd-positioned bits.
    

    """
def even_bit_set_number(n):
    """
    In a social network's friend recommendation system, develop a function that modifies a user's binary profile signature by activating all even-positioned social metrics, where each bit represents different social attributes like activity levels and interaction patterns. The function should take a binary number representing the user's current social metrics and return a new value with all even-positioned bits set to 1, while preserving the original odd-positioned bits.
    

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