Are the constraints such that all calcultions will fit in long long datatype or not???
It can be done with the available data types in C or C++
I think you should be able to figure out on your own if you really want to use integer datatypes, but in case you didn’t notice, the output should be a real number.
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please explain the test case. I am not getting how come the answer be in fractions
While I am not allowed to explain the test cases I do believe I can safely point out that the question asks for an expected value. Expected value - Wikipedia