This problem is really boring.
You are given a number sequence S which contain n integers and m queries, each time i will give your two integers id1 and id2, you need to tell me whether i can get S[id1] + S[id2] from the n integers.
Input starts with an integer T(T <= 5) denoting the number of test cases.
For each test case, n(1 <= n <= 100000, 1 <= m <= 10000) are given, and the second line contains n integers, each of them is larger then 0 and no larger than 10^11.
Next m lines, each line contains two integers id1 and id2(1 <= id1, id2 <= n).
For each case, first print the case number.
For each query, print “Yes” if i can get S[id1] + S[id2] from S, otherwise print “No”(without the quote).
3 4 2 1 3