Given matrix m and an element of that matrix, return the offset from its first element.
e.g. m=[11 2 34; 40 51 6; 87 8 109]
element = 51
Then, offset = 5
Return 0, if that element if not a matrix element
This is the same as Problem 2092.
Matrix with different incremental runs
Say something funny
Return area of square
Create a two dimensional zero matrix
2倍してみよう - ここからスタート！
Find my birthday
Sum of diagonals elements of a matrix
Matrix rotation as per given angle
Let's get back to school, and create multiplication tables
Given an input string, generate a variable name out of it
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