Given a sequence \(a_1{\dots}a_n\). You need to perform m queries on it.

In each query, two parameters \(x,y\) are given, and we let

In this statement, t is a given constant, which can be 0 or 1. And \(ans\) is the answer of last query, with initial value is 0.

You need to find a pair \((i,j)\), satisfies \(l\le i\le j\le r\), and maximize \(a_i\ xor\ a_{i+1}\ xor\dots xor\ a_j\).

The answer of this query is \(a_i\ xor\ a_{i+1}\ xor\dots xor\ a_j\).

Input

The first line contains three integers, n, m, and t.

The second line contains n integers, representing the sequence a.

The next m lines, each line contains two integers, x and y.

Output

For each query, output an integer represents the answer.

Constraints

\(1\le n,m\le 20000\)

\(0\le t\le 1\)

\(0\le x,y,a_i\le 10^9\)