THE END IS COMINGGGGGG!
Mike has got stuck on a mystery machine. If he cannot solve this problem, he will go to his doom.
This machine is consist of n cells, and a screen. The i-th cell contains a number ai(1≤i≤n). The screen also contains a number s, which is initially 0.
There is a button on each cell. When the i-th is pushed, Mike observes that, the number on the screen will be changed to s+ai, where s is the original number. and the number on the i-th cell will be changed to a2i.
Mike observes that the number is stored in radix p, where p=9223372034707292160. In other words , the operation is under modulo p.
And now, Mike has got a list of operations. One operation is to push buttons between from l-th to r-th (both included), and record the number on the screen. He is tired of this stupid work, so he asks for your help. Can you tell him, what are the numbers recorded.
The first line contains an integer T(T≤5), denoting the number of test cases.
For each test case, the first line contains two integers n,m(1≤n,m≤105).
The next line contains n integers ai(0≤ai<p), which means the initial values of the n cells.
The next m lines describe operations. In each line, there are two integers l,r(1≤l≤r≤n), representing the operation.
For each test case, output ''Case #t:'', to represent this is the t-th case. And then output the answer for each query operation, one answer in a line.
For more details you can take a look at the example.
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