3941. Password Strength

You are given a string password. The strength of the password is calculated based on the following rules: - 1 point for each distinct lowercase letter ('a' to 'z'). - 2 points for each distinct uppercase letter ('A' to 'Z'). - 3 points for each distinct digit ('0' to '9'). - 5 points for each distinct special character from the set "!@#$". Each character contributes at most once, even if it