given a and b, subtract and give the answer
It is strongly recommended to include several tests in your Test Suite, otherwise the solution is easy to hardcode (see Solution 1470259). See also Problem 44521 for further discussion of this topic.
Back and Forth Rows
Try 1.5.4: Celsius to Fahrenheit
Matrix to column conversion
Find out sum of all elements of given Matrix
NaN (欠損値) が含まれている行を削除しよう
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