The Lock

Try solving the code as fast as you can!
You will be able to choose code length.
Every attempt you will receive a hint - how close you are to correct solution.
Get some practice at "code length: 3" and start solving real hardcode!

The game is similiar to Mastermind, but it uses digits instad of colored pegs!

Symbols:
'v' - represents the digit that is picked correctly.
'+' - represents the digit that is picked correctly, but belongs on different position.
'-' - represents the digit being incorrect.

Note: symbols doesn't represent current digits.
For example. Code: 335.
123 -> (+--)
355 -> (v+-)
335 -> (vvv)