B'You are given three integers a , b , and d . Your task is to find any integer x which satisfies all of the following conditions, or determine that no such integers exist: Here, | denotes the bitwise OR operation. Each test contains multiple test cases. The first line of input contains one integer t ( 1 <= t <= 10^4 ) -- the number of test cases. Each test case consists of one line, containing three integers a , b , and d ( 1 <= a,b,d lt 2^{30} ). For each test case print one integer. If there exists an integer x which satisfies all of the conditions from the statement, print x . Otherwise, print -1 . If there are multiple solutions, you may print any of them. In the first test case, x=18 is one of the possible solutions, since 39|18=55 and 12|18=30 , both of which are multiples of d=5 . In the second test case, x=14 is one of the possible solutions, since 8|14=6|14=14 , which is a multiple of d=14 . In the third and fourth test cases, we can show that there are no solutions. '...