s='He was so tired'
ans = true
Check to see if a Sudoku Puzzle is Solved
Compute a dot product of two vectors x and y
Find a subset that divides the vector into equal halves
Create a vector whose elements depend on the previous element
select the primes of a vector
Calculate the centroid of a triangle
Create cotangent function out of sine.
Find the Sum of the Series:
Find Adjacency Matrix
Solve the system of equations.
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