solves the question yet the checker returns not a valid answer.
the following 4 lines solve this question
yet the online checker returns not a valid answer
Whether the input is vector?
Sum the numbers on the main diagonal
Sum of odd numbers in a matrix
first element of matrix
Average of odd values
The great 82-year-old
Friday or not
Please check if calorie intake is less than 300 kcal.
I hope to lose weight healthily...
Add 3 (x<=100) Or Subtract 100 and add 3(100<x)
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