I couldn’t understand this problem, I’m confused! The Input format says that the input will have 4 lines, while the sample input has 9 lines. Also output format says, the output will have only 1 line, while the sample output has 2 lines. 
I couldn't understand this problem!
hello @moon there are number of test cases
i.e in the sample test case the first line inout is the number of test cases.
and each input there will be 4 lines so 2*4=8 this is the input format.
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