Weirdly, the code that finishes the biggest problem in 0.6 sec on my machine will not finish on the server. Is 0.6 sec too long for the server, or is it an error? I'm not clever enough to understanding this, please help.
I met the problem too. Should we use some mathematical characters of the sequence to improve our codes? I'm not quite sure.
Acid and water
Matrix indexing with two vectors of indices
Return the first and last characters of a character array
Side of a rhombus
Height of a right-angled triangle
Repeat string n times
String permutations on phone keyboard
Van Eck's Sequence's nth member
Find the biggest digit in a matrix
Find a real root of a quintic function without using roots function
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