Number of problems
Expected learning time
Q. What benefits can I get by paying?
After paying, you will be able to access and use all the content in the problem set. You will be able to solve the problems and use explanations for each problem.
Q. Is it okay to post the solution to CodeTree's algorithm problems on personal blog/GitHub/other sites?
All educational materials on the CodeTree site are protected by copyright law. Unauthorized reproduction/copying/distribution without the consent of the author is prohibited. Please refer to Section 27 of the Branch & Bound Terms of Service for copyright information. However, for problems that are provided for free, it is possible to post them on blogs/GitHub, but you must always include the link to the problem.
Q. What sets CodeTree apart from other services?
The biggest advantage is that it provides rich content created by national representative algorithm experts. The selected problems, model solutions, and learning guidelines selected by the national representatives are provided, allowing you to study more efficiently than anywhere else. In addition, the coding and grading system is user-friendly, making it much easier to code on our platform than on a platform directly made by another company.
Q. Can I receive a certificate of completion?
Certificates of completion are issued only if all the basic problems in the problem set are solved. However, the form required for the certificate of completion may vary depending on the submitting institution, so please contact us at email@example.com if you have any questions.
Q. How is the refund policy?
The refund policy for the problem set is as follows: The paid usage period is the first 30 days from the date of purchase, and after the 31st day it is a free review period. After all paid content (hereinafter "service") has been provided, refund is not possible due to the nature of the online service. In other words, the first 30 days of the usage period are based on the refundable days standards set by the Academy Law, and you can use the package during the free review period corresponding to [selected fee schedule usage period - 30 days]. Date of use: The date of use is calculated from the date of payment. Within 7 days after payment, if less than 5 paid problems are opened: 100% refund possible Before 1/3 of the paid usage period has passed (within 10 days after payment): refund after deducting 1/3 of the payment amount Before 1/2 of the paid usage period has passed (within 14 days after payment): refund after deducting 1/2 of the payment amount. After 1/2 of the paid period has passed (more than 14 days after payment), refund is not possible. refund request여기에서 가능합니다.
Q. How can I deactivate my account?
Please contact us at our email (firstname.lastname@example.org).
Q. Where should I contact for other inquiries?
For other inquiries, please use the real-time chat consultation at the bottom of our homepage or contact us at email@example.com.