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!
Which doors are open?
2 b | ~ 2 b
Multiply 2 numbers
Permute diagonal and antidiagonal
Maximum value in a matrix
Test if two numbers have the same digits
Test if a Number is a Palindrome without using any String Operations
Next Lower Power of B
Make an N-dimensional Multiplication Table
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