"If you have an apple and I have an apple and we exchange these apples then you and I will still each have one apple. But if you have an idea and I have an idea and we exchange these ideas, then each of us will have two ideas." - George Bernard Shaw

Now Alice has `A` apples and `B` ideas, while Bob has `C` apples and `D` ideas, what will they have if they exchange all things?

There are multiple test cases. The first line of input contains an integer `T` indicating the number of test cases. For each test case:

The only line contains four integers `A`, `B`, `C`, `D` (0 <= `A`, `B`, `C`, `D` <= 100) - as the problem described.

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