A1326. [COCI-2015_2016-contest7]#3 OZLJEDA

Due to the frantical usage of the racket to kill flies, Marin has sustained a serious bodily injury known to the medical community as epicondylitis lateralis humeri. His grandma has advised smearing rakija over it, the doctor has prescribed a strong painkiller, but Marin has ignored every single advice and decided to look for the answer in integer sequences.
He has discovered a previously undiscovered sequence of integers and called it the xorbonacci sequence.
The n th element in the sequence is denoted with xn. The sequence is defined recursively in the following way:
x1 = a1, x2 = a2, ...
xk = ak, xn = xn−1 ⊕ xn−2 ⊕ ... ⊕ xn−k, n > k Because of a reason only known to Marin, he determined that all his sorrows will go away if you answer his Q queries defined with numbers l and r. The answer to the query is represented with the value xl ⊕ xl+1 ⊕ ... ⊕ xr−1 ⊕ xr Help Marin and answer his queries.
Please note: The operation ⊕ is the operation of binary XOR.

The first line of input contains the integer K (1 6 K 6 100 000) from the task.
The following line contains K integers that represent the first K elements in the xorbonacci sequence.
All numbers are smaller than 1018 .
The following line contains the integer Q (1 6 Q 6 106 ) from the task.
The i th of the following Q lines contains two integers li and ri (1 6 li 6 ri 6 1018) that represent Marin’s i th query.

Each of the following Q lines of output must contain the answers to Marin’s queries, the order being the same as the input.