Tyre problem

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There are $N$ bikes and $M$ cars on the road. - Each bike has $2$ tyres. - Each car has $4$ tyres. Find the total number of tyres on the road. ### 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 integers $N, M$. ### Output For each test case, output in a single line, the total number of ty

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solution.cppC++17

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