Given a string x, return the sum of all ASCII numbers of all characters.
for example, if x='lala' ('l'-> 108, 'a'->97) then y = 108+97+108+97
Return the 3n+1 sequence for n
Solve the Sudoku Row
First N Perfect Squares
Tiling a matrix
Volume of a box
Connect 4 (the boardgame)
Count the numbers
Add the even numbers
How many complete pizzas
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