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Some problems are really interesting, and other ones are not. This problem certainly belongs to the latter category. You are just to add two integers.
The first line of input contains an integer () denoting the number of test cases. Each of the following lines holds a description of a test tase: two integers and ().
Your program should output exactly lines. The -th of these lines should contain the number .
For the input data:
3 7 11 -3 2 1000000000000000000 1000000000000000000
the correct result is:
18 -1 2000000000000000000