题目描述
You are the principal of the Cake school in chefland and today is your birthday. You want to treat each of the children with a small cupcake which is made by you. But there is a problem, You don't know how many students are present today.
The students have gathered of the morning assembly in $R$ rows and $C$ columns. Now you have to calculate how many cakes you have to make such that each child gets a cupcake.
-----Input:-----
- First-line will contain $T$, the number of test cases. Then the test cases follow.
- Each test case contains a single line of input, two integers $R$ and $C$.
-----Output:-----
For each test case, output number of cupcakes you have to make.
-----Constraints-----
- $1 \leq T \leq 1000$
- $2 \leq R,C \leq 10^6$
-----Sample Input:-----
1
5 10
-----Sample Output:-----
50
输入格式
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输出格式
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