Unfortunately, your checker does only include 4 digits of accuracy, and therefore the 'correct' solution is not accepted, only a hard-coded variant.
It is always better to have multiple tests, to avoid non-generic solutions to problems.
Hello, jamal hasoon. I completely agree with the preceding comment. Furthermore, it is very strongly recommended to write your own general solution code, to ensure compatibility of the inputs and the target solution in the Test Suite. —DIV
Alternatively, if you intend that users should round their results, then please include that instruction explicitly in the Problem Statement.
Another point: please do not include so much sample code in the Solution Template that is seen by everybody.
Lastly, it would be clearer to refer to the "decimal part" (or "fractional part"), rather than "fraction part".
See Problem 44521 for more ideas. —DIV
Return unique values without sorting
Fibonacci-Sum of Squares
Summation of array
Minimum Maximum Sort Array
Zigzag of square matrix
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