Problem Statement

Given are two sequences a=${a_0,\ldots,a_{N-1}$} and b=${b_0,\ldots,b_{N-1}$} of N non-negative integers each.
Snuke will choose an integer k such that $0 \leq k < N$ and an integer x not less than 0, to make a new sequence of length N, a'={a_0'$,\ldots,a_{N-1}$'}, as follows:

• a_i'$= a_{i+k \mod N}$\ XOR \ x

Find all pairs (k,x) such that a' will be equal to b.

What is $\text{ XOR }$?

The XOR of integers A and $B, A \text{ XOR } B$, is defined as follows:

• When $A \text{ XOR } B$ is written in base two, the digit in the 2^k'$s place (k \geq 0)$ is 1 if either A or B, but not both, has 1 in the 2^k's place, and 0 otherwise.

For example$, 3 \text{ XOR } 5 = 6.$ (In base two: $011 \text{ XOR } 101 = 110.)$

Input

Input is given from Standard Input in the following format:
N
a_0 a_1 ... a_{N-1}
b_0 b_1 ... b_{N-1}

Output

Print all pairs (k, x) such that a' and b will be equal, using one line for each pair, in ascending order of k (ascending order of x for pairs with the same k).
If there are no such pairs, the output should be empty.

Constraints

• $1 \leq N \leq 2 \times 10^5$
• $0 \leq a_i,b_i < 2^{30}$
• All values in input are integers.

Sample Input 1

3
0 2 1
1 2 3

Sample Output 1

1 3

If (k,x)=(1,3),

• a_0'=(a_1\ XOR \ 3)=1

• a_1'=(a_2\ XOR \ 3)=2

• a_2'=(a_0\ XOR \ 3)=3

and we have a' = b.

Sample Input 2

5
0 0 0 0 0
2 2 2 2 2

Sample Output 2

0 2
1 2
2 2
3 2
4 2

Sample Input 3

6
0 1 3 7 6 4
1 5 4 6 2 3

Sample Output 3

2 2
5 5

Sample Input 4

2
1 2
0 0

Sample Output 4

No pairs may satisfy the condition.

见题面 Input 部分

见题面 Output 部分