Fill the Bucket

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Chef has a bucket having a capacity of $K$ liters. It is already filled with $X$ liters of water. Find the **maximum** amount of extra water in liters that Chef can fill in the bucket without overflowing. ### Input - The first line will contain $T$ - the number of test cases. Then the test cases follow. - The first and only line of each test case contains two space separated integers $K$ and $X

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solution.cppC++17

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