Reverse tasks of various difficulty. Each copy of task is unique. Time is constrained.
Dislikes some numbers andsums it with errors.What numbers it dislikes?
There is a program that prints a prime number with a given number, but regularly makes mistakes.
Spyware tool, protected from falling into the wrong hands.What did he put in the picture?
You can have fun chatting with him, but then, having already said goodbye, he sometimes says that he will be bored.
The character stream on the input and the encrypted stream on the output. Decryptor required.