Second-Ever CS50x Coding Contest

David J. Malan

On Friday the 13th (boo!) of January 2017 began the second-ever CS50x Coding Contest, the much-awaited sequel to 2016’s first-ever, thanks to our friends at HackerRank. This epic weekend of code invited CS50x students around the world to form teams with 0, 1, 2, or 3 classmates (or friends) and tackle a set of 10 programming challenges, all of them written (for Fall 2016’s on-campus coding contest) by CS50’s own undergraduate staff.

Just as the first contest was announced with some fanfare, thanks to CS50’s production team:

So was the second!

Notice how CS50’s saloon makes an appearance in the latest.

Teams had 3 days to tackle the contest’s 10 challenges, each of which had to be implemented in C:

(Click the Editorial tab on each challenge’s page to see a sample solution.)

Students from all over the world registered, from 80 countries in total, with the most students from:

India, with 207 students United States, with 124 students Egypt, with 22 students Brazil, with 17 students Canada, with 17 students Algeria, with 14 students United Kingdom, with 14 teams Pakistan, with 13 students Germany, with 11 students Turkey, with 11 students

Though apparently only Algeria took photos!

This is CS50 in Algeria.

This is CS50 in Algeria.

By weekend’s end, 51 teams had solved all 10 of the challenges, each of whom will be receiving a message via HackerRank!

altari , from Vietnam

, from Vietnam challenge2017 , from France

, from France coders_010 , from India and the United States

, from India and the United States creepyfriends , from the United States

, from the United States cs50_rusher , from Germany and Japan

, from Germany and Japan cs50_unicamp , from Brazil and the United States

, from Brazil and the United States cs50irbis , from Montenegro and Portugal

, from Montenegro and Portugal dangereagle , from the United States

, from the United States devcoders , from India

, from India doublefish , from Kazakhstan

, from Kazakhstan e_programmer , from Egypt

, from Egypt fearlesscoders , from India

, from India frozenstring , from Jordan

, from Jordan gddn , from the United States

, from the United States hack_maniax , from India

, from India hackingllamas , from Peru

, from Peru i_suck_at_names , from Serbia

, from Serbia iitbbs , from India

, from India intangible1337 , from Myanmar

, from Myanmar itu_bees , from Turkey

, from Turkey itzteam , from India

, from India just_kidding2 , from Egypt

, from Egypt kookycooky , from the United States

, from the United States lees_team , from the United States

, from the United States les_caribous , from France and the United States

, from France and the United States losnakes , from Taiwan

, from Taiwan ManiAC111 , from India and Spain

, from India and Spain maniacs_code , from India

, from India mauvegruffalos , from Argentina, Germany, and Slovenia

, from Argentina, Germany, and Slovenia my_better_team , from the United States

, from the United States myself_and_me_2 , from Germany

, from Germany name12 , from India, Pakistan, Serbia, and the United States

, from India, Pakistan, Serbia, and the United States obfuscatedcoders , from India

, from India osu_tuan , from the United States

, from the United States playerscoders , from India

, from India puresu_in , from El Salvador and Japan

, from El Salvador and Japan pyaepk , from Myanmar

, from Myanmar ranarama , from France

, from France rev_decoders2 , from India

, from India rootn00bs , from Georgia, India, and the United Kingdom

, from Georgia, India, and the United Kingdom srandtimeNULL , from Thailand

, from Thailand sysplay , from India

, from India team00 , from India

, from India team2347812837 , from Singapore

, from Singapore team_of_me , from India

, from India TeamESI , from Algeria

, from Algeria teamsenshi , from Japan

, from Japan TOSCANiNi , from Egypt

, from Egypt the_burrs , from Mexico

, from Mexico tumbata , from Brazil

, from Brazil vishusachdeva228 , from India

, from India wild_boars, from Poland

Congratulations to all!