Bitwise Queries (Easy Version)

The only difference between the easy and hard versions is the constraints on the number of queries.

This is an interactive problem.

Ridbit has a hidden array $$$a$$$ of $$$n$$$ integers which he wants Ashish to guess. Note that $$$n$$$ is a power of two. Ashish is allowed to ask three different types of queries. They are of the form

• AND $$$i$$$ $$$j$$$: ask for the bitwise AND of elements $$$a_i$$$ and $$$a_j$$$ $$$(1 \leq i, j \le n$$$, $$$i \neq j)$$$
• OR $$$i$$$ $$$j$$$: ask for the bitwise OR of elements $$$a_i$$$ and $$$a_j$$$ $$$(1 \leq i, j \le n$$$, $$$i \neq j)$$$
• XOR $$$i$$$ $$$j$$$: ask for the bitwise XOR of elements $$$a_i$$$ and $$$a_j$$$ $$$(1 \leq i, j \le n$$$, $$$i \neq j)$$$

Can you help Ashish guess the elements of the array?

In this version, each element takes a value in the range $$$[0, n-1]$$$ (inclusive) and Ashish can ask no more than $$$n+2$$$ queries.

To ask a query print a single line containing one of the following (without quotes)

• "AND i j"
• "OR i j"
• "XOR i j"

For each query, you will receive an integer $$$x$$$ whose value depends on the type of query. If the indices queried are invalid or you exceed the number of queries however, you will get $$$x = -1$$$. In this case, you should terminate the program immediately.

When you have guessed the elements of the array, print a single line "! " (without quotes), followed by $$$n$$$ space-separated integers  — the elements of the array.

Guessing the array does not count towards the number of queries asked.

The interactor is not adaptive. The array $$$a$$$ does not change with queries.

After printing a query do not forget to output the end of the line and flush the output. Otherwise, you will get Idleness limit exceeded. To do this, use:

• fflush(stdout) or cout.flush() in C++;
• System.out.flush() in Java;
• flush(output) in Pascal;
• stdout.flush() in Python;
• see the documentation for other languages.

Hacks

To hack the solution, use the following test format:

On the first line print a single integer $$$n$$$ $$$(4 \le n \le 2^{16})$$$ — the length of the array. It must be a power of 2. The next line should contain $$$n$$$ space-separated integers in the range $$$[0, n-1]$$$ — the array $$$a$$$.