National High School Programming Contest 2020 - Practice Contest

Schedule

The contest started on June 19, 2020 at 6:00 AM UTC and ran for 36 hours.

Rules

You can use Bash 5.0, Brainf*ck, C# Mono 6.0, C++11 GCC 7.4, and 18 other programming languages C++14 GCC 8.3, C++17 GCC 9.2, C11 GCC 9.2, Common Lisp SBCL 2.0, Erlang 22.3, Free Pascal 3.0, Go 1.13, Haskell 8.6, Java 1.8, Kotlin 1.1, Node.js 10.16, Perl 5.30, PHP 7.2, PyPy 7.1 (2.7), PyPy 7.1 (3.6), Python 2.7, Python 3.7, and Ruby 2.6 in this contest.

Be fair, be honest. Plagiarism will result in disqualification. Judges’ decisions will be final.