Don't be a Kad
The typical way to measure distance between two numbers on a number line is to subtract them and take the absolute value. This is also referred to as the "Euclidean distance" in one dimension. So, the distance between 5 and 8? 3.
This isn't the only way to measure distance. Just as there's multiple ways to measure distance in two dimensions ("Manhattan distance", "as the crow flies" (Euclidean in 2 dimensions), etc.), there's multiple "metrics" in one dimension as well.
One way to compute a distance with a different metric is to simply XOR the two numbers together. For example, the XOR-distance between 5 and 8 is 13.
You will be given a long list of newline-separated numbers over stdin. Then you
will be given a blank line, and then a series of numbers representing queries
that should be answered with the
N XOR-nearest numbers from the initial long
N is provided by the
--request_size commandline argument). Each
answer should be output on a new line. Numbers won't be 2^64 or larger or less
139596472382 332835991912435768 20381213957485674 58347458 73819384887567 2 123451234512345 3125
73819384887567 58347458 2 2 58347458 139596472382