题号:NC209992
时间限制:C/C++/Rust/Pascal 5秒,其他语言10秒
空间限制:C/C++/Rust/Pascal 512 M,其他语言1024 M
64bit IO Format: %lld
题目描述
Mr. W have a sequence A with length N.
Set
Mr.W makes Q queries. For each query he wants to know the size of S(L,R) for given L, R.
L, R will not be given directly. He will give you L' and R'.

means XOR.
Lastans donates the answer of last query. It's zero at the beginning.
输入描述:
The first line contains one integer
)
.
Next line contains N integers
)
.
Next line contains one integer
)
Next Q lines each contains two integers
)
.
输出描述:
Q lines, the answer of each query.
示例1
输入
复制
5
15 14 13 11 7
3
2 5
2 5
2 5