Welcome to HackerRank's International Women's Day Coding Challenge, a coding contest where your winnings help support a cause in need. Compete against top coders from around the world to give $500 to a U.S. charity that increases opportunities for women in tech.

Prizes:

1st place: Airpods Pro

2nd place: Beats Solo3

3rd place: Razer BlackWidow Gaming Keyboard

HackerRank will also donate $500 in the top competitor's name to an organization of your choice from a curated list of U.S.-based charities.

1. Only U.S.-based participants can win prizes and only U.S.-based charities can be chosen for donations.

2. If a winner would like to donate to a charity not listed in "International Women's Day Preferred Charities", it must be approved by contest administrators. Charities receiving a donation must be officially registered and crowdfunding sites are not eligible.

3. This contest is for individuals; teams are not allowed.

4. Any competitor found cheating will be disqualified and banned from future coding contests.

5. By participating and selecting "I agree to share my contest results and profile information with sponsor companies," you are granting HackerRank permission to share your contest results and your HackerRank community profile with any sponsors listed. If there are contest sponsors, they will be plainly displayed on the contest page.

6. By participating and selecting "I'm interested in new job opportunities", you are indicating that you are willing to be considered for employment by companies using HackerRank for recruitment purposes.

Scoring: 

Participants are ranked by score. Your score is determined by the number of test cases your code submission successfully passes. If two participants have the same score, the tie is broken by the contestant with the lowest amount of time taken.