s='He was so tired'
ans = true
Check to see if a Sudoku Puzzle is Solved
Back to basics 1 - Saving
Return area of square
Tiling a matrix
Sum of odd numbers in a matrix
Find the product of the positive elements above the main diagonal.
Solve the following system of equations.
Find the sum of the negative elements under the main diagonal.
Find the Sum of the Series:
Solve the following boundary value problem
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