I solved, but the solution is wrong, there is no 60th minute in analog clocks (test case 20). Do not try to use mod until they fix it.
Is the problem proposer serious with the 20th test?
Nice trick with the 222.2 - very clever!
Reverse Run-Length Encoder
Calculate the Levenshtein distance between two strings
Set some matrix elements to zero
Largest Twin Primes
Make an N-dimensional Multiplication Table
Roll the Dice!
Specific Element Count
Check to see if a Sudoku Puzzle is Solved
Test if a Number is a Palindrome without using any String Operations
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