There is a m*n grade given. Find the number of rectangles in the grid. Remember, a square is also a rectangle.
Please change the function call in the test suite to your_fcn_name(m,n) instead of your_fcn_name(x).
Please check the test cases. x???
Back to basics 8 - Matrix Diagonals
Back to basics 19 - character types
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Choose group with people
odd number odd sum
How many ways to write a number
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