dont add but add

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Write a program to add two numbers without using the addition operator ###Input: - The first line of the input will contain $T$ ie. no of the test-cases. - The following test-cases line will contain the two numbers to add $a$ and $b$. ###Output: - The output will be the sum of the two inputs $res$ for each test-cases ###Constraints - $1 \leq T \leq 1000$ - $-1000 \leq T \leq 1000$

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solution.cppC++17

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