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problem-statements

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A collection of past and present NHSCC problem statements and related resources.

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# BDPA NHSCC Problem Statement Archive

Welcome! This is a collection of past and present NHSCC problem statements and
related resources.

Each problem statement is broken up into two parts: the primary _Problem
Statement 1_ (PS1), which is released **at least a month before the conference**
and must be completed within that time frame, and the supplementary _Problem
Statement 2_ (PS2), which is released **during the conference** and must be
completed within 8 hours.

Two problem statements are released every year: a _sample_ and an _actual_
problem statement. Each problem statement pair presents students with a similar
challenge, so if a team can complete the sample PS1 and PS2, they are in an
excellent position to do well on the actual competition problem statement.

## This Year's Problem Statements

<table>
<tr>
<th>
<img width="500" height="1" />
<a href="/2026/elections_irv">Elections (IRV)</a> (sample)
</th>
<th>
<img width="500" height="1" />
<a href="/2026/airports">Airports</a> (actual)
</th>
</tr>

</table>

## Past Problem Statements

Past problem statements and their APIs will remain functional
_forever_1, and can be used as training material for future
competitions.

Most API endpoints require authentication. Use our Slack bot to manage your API
keys, or clone the API repository of your choice and run the API locally (it's
pretty easy).

1 Unless
[GitHub Actions](https://github.com/features/actions),
[MongoDB Atlas](https://www.mongodb.com/cloud/atlas), or
[Vercel](https://vercel.com) go down, or they're taken down for repairs
(DFR)

---

<table>
<tr>
<th>
<img width="500" height="1" />
<a href="/2019">BDPA Elections</a> (sample)
</th>
<th>
<img width="500" height="1" />
<a href="/2020">BDPA Airports</a> (actual)
</th>
</tr>
<tr>
<td>

📑 <a href="/2019/elections">Problem statement</a> (DFR)
 
🌍 <a href="https://elections.solutions.hscc.bdpa.org">Live demo</a> (DFR)
 
📚 <a href="https://hscc4cfe8be7.docs.apiary.io/">Interactive API docs</a>

</td>
<td>
<img width="500" height="1" />

📑 <a href="/2020/airports">Problem statement</a>
 
🌍 <a href="https://airports.solutions.hscc.bdpa.org">Live demo</a> (DFR)
 
📚 <a href="https://hsccdfbb7244.docs.apiary.io/">Interactive API docs</a> (version 1)
 
📚 <a href="https://hscc210ff8c0.docs.apiary.io/">Interactive API docs</a> (version 2)

</td>
</tr>
<tr>
<td>
<img width="500" height="1" />

📦 <a href="https://github.com/nhscc/elections.solutions.hscc.bdpa.org">Demo source code</a>
 
🎒 <a href="https://github.com/nhscc/elections.api.hscc.bdpa.org">API source code</a>

</td>
<td>
<img width="500" height="1" />

📦 <a href="https://github.com/nhscc/airports.solutions.hscc.bdpa.org">Demo source code</a>
 
🎒 <a href="https://github.com/nhscc/airports.api.hscc.bdpa.org">API source code</a>

</td>
</tr>
</table>

<table>
<tr>
<th>
<img width="500" height="1" />
<a href="/2021">Barker</a> (sample)
</th>
<th>
<img width="500" height="1" />
<a href="/2021">Ghostmeme</a> (actual)
</th>
</tr>
<tr>
<td>

📑 <a href="/2021/barker">Problem statement</a>
 
🌍 <a href="https://barker.solutions.hscc.bdpa.org">Live demo</a> (DFR)
 
📚 <a href="https://hscckhug3eb6.docs.apiary.io/">Interactive API docs</a>

</td>
<td>
<img width="500" height="1" />

📑 <a href="/2021/ghostmeme">Problem statement</a>
 
🌍 <a href="https://imgur.com/a/TytqlvJ">Meme storage</a>
 
🌍 <a href="https://ghostmeme.solutions.hscc.bdpa.org">Live demo</a> (DFR)
 
📚 <a href="https://hscc6xt8cqqf.docs.apiary.io/">Interactive API docs</a>

</td>
</tr>
<tr>
<td>
<img width="500" height="1" />

📦 <a href="https://github.com/nhscc/barker.solutions.hscc.bdpa.org">Demo source code</a>
 
🎒 <a href="https://github.com/nhscc/barker.api.hscc.bdpa.org">API source code</a>

</td>
<td>
<img width="500" height="1" />

📦 <a href="https://github.com/nhscc/ghostmeme.solutions.hscc.bdpa.org">Demo source code</a>
 
🎒 <a href="https://github.com/nhscc/ghostmeme.api.hscc.bdpa.org">API source code</a>

</td>
</tr>
</table>

<table>
<tr>
<th>
<img width="500" height="1" />
<a href="/2022">BDPADrive</a> (sample) (2022)
</th>
<th>
<img width="500" height="1" />
<a href="/2022">qOverflow</a> (actual) (2022)
</th>
</tr>
<tr>
<td>
<img width="500" height="1" />

📑 <a href="/2022/bdpadrive">Problem statement</a>
 
🌍 <a href="https://drive.solutions.hscc.bdpa.org">Live demo</a> (DFR)
 
📚 <a href="https://hsccebun98j2.docs.apiary.io/">Interactive API docs</a> (version 1)
 
📚 <a href="https://hscchkie87hj.docs.apiary.io/">Interactive API docs</a> (version 2)

</td>
<td>

📑 <a href="/2022/qoverflow">Problem statement</a>
 
🌍 <a href="https://qoverflow.solutions.hscc.bdpa.org">Live demo</a> (DFR)
 
📚 <a href="https://hscc8udvc7gs.docs.apiary.io/">Interactive API docs</a>
 

</td>
</tr>
<tr>
<td>
<img width="500" height="1" />

📦 <a href="https://github.com/nhscc/drive.solutions.hscc.bdpa.org">Demo source code</a>
 
🎒 <a href="https://github.com/nhscc/drive.api.hscc.bdpa.org">API source code</a>

</td>
<td>
<img width="500" height="1" />

📦 <a href="https://github.com/nhscc/qoverflow.solutions.hscc.bdpa.org">Demo source code</a>
 
🎒 <a href="https://github.com/nhscc/qoverflow.api.hscc.bdpa.org">API source code</a>

</td>
</tr>
</table>

<table>
<tr>
<th>
<img width="500" height="1" />
<a href="/2023">BlogPress</a> (sample)
</th>
<th>
<img width="500" height="1" />
<a href="/2023">InBDPA</a> (actual)
</th>
</tr>
<tr>
<td>

📑 <a href="/2023/blogpress">Problem statement</a>
 
🌍 <a href="https://blogpress.solutions.hscc.bdpa.org">Live demo</a> (DFR)
 
📚 <a href="https://hsccjcat4d54.docs.apiary.io/">Interactive API docs</a>

</td>
<td>
<img width="500" height="1" />

📑 <a href="/2023/inbdpa">Problem statement</a>
 
🌍 <a href="https://inbdpa.solutions.hscc.bdpa.org">Live demo</a> (DFR)
 
📚 <a href="https://hsccrkby0uo4.docs.apiary.io/">Interactive API docs (version 1)</a>
 
📚 <a href="https://hscc3epkxdp7.docs.apiary.io/">Interactive API docs (version 2)</a>

</td>
</tr>
<tr>
<td>
<img width="500" height="1" />

📦 <a href="https://github.com/nhscc/blogpress.solutions.hscc.bdpa.org">Demo source code</a>
 
🎒 <a href="https://github.com/nhscc/blogpress.api.hscc.bdpa.org">API source code</a>

</td>
<td>
<img width="500" height="1" />

📦 <a href="https://github.com/nhscc/inbdpa.solutions.hscc.bdpa.org">Demo source code</a>
 
🎒 <a href="https://github.com/nhscc/inbdpa.api.hscc.bdpa.org">API source code</a>

</td>
</tr>
</table>

<table>
<tr>
<th>
<img width="500" height="1" />
<a href="/2024">BDPA Elections IRV</a> (sample) (2024)
</th>
<th>
<img width="500" height="1" />
<a href="/2024">BDPA Elections CPL</a> (actual)
</th>
</tr>
<tr>
<td>

📑 <a href="/2024/elections_irv">Problem statement</a>
 
🌍 <a href="https://elections_irv.solutions.hscc.bdpa.org">Live demo</a> (DFR)
 
📚 <a href="https://hscc18f802d3.docs.apiary.io">Interactive API docs</a>

</td>
<td>
<img width="500" height="1" />

📑 <a href="/2024/elections_cpl">Problem statement</a>
 
🌍 <a href="https://elections_cpl.solutions.hscc.bdpa.org">Live demo</a> (DFR)
 
📚 <a href="https://hscc35a947d8.docs.apiary.io">Interactive API docs</a>

</td>
</tr>
<tr>
<td>
<img width="500" height="1" />

📦 <a href="https://github.com/nhscc/elections_irv.solutions.hscc.bdpa.org">Demo source code</a>
 
🎒 <a href="https://github.com/nhscc/elections_irv.api.hscc.bdpa.org">API source code</a>

</td>
<td>
<img width="500" height="1" />

📦 <a href="https://github.com/nhscc/elections_cpl.solutions.hscc.bdpa.org">Demo source code</a>
 
🎒 <a href="https://github.com/nhscc/elections_cpl.api.hscc.bdpa.org">API source code</a>

</td>
</tr>
</table>

<table>
<tr>
<th>
<img width="500" height="1" />
<a href="/2025">BDPADrive</a> (sample) (2025)
</th>
<th>
<img width="500" height="1" />
<a href="/2025">qOverflow</a> (actual) (2025)
</th>
</tr>
<tr>
<td>
<img width="500" height="1" />

📑 <a href="/2025/bdpadrive">Problem statement</a>
 
🌍 <a href="https://drive.solutions.hscc.bdpa.org">Live demo</a> (DFR)
 
📚 <a href="https://hsccebun98j2.docs.apiary.io/">Interactive API docs</a>

</td>
<td>

📑 <a href="/2025/qoverflow">Problem statement</a>
 
🌍 <a href="https://qoverflow.solutions.hscc.bdpa.org">Live demo</a> (DFR)
 
📚 <a href="https://hscc8udvc7gs.docs.apiary.io/">Interactive API docs</a>
 

</td>
</tr>
<tr>
<td>
<img width="500" height="1" />

📦 <a href="https://github.com/nhscc/drive.solutions.hscc.bdpa.org">Demo source code</a>
 
🎒 <a href="https://github.com/nhscc/drive.api.hscc.bdpa.org">API source code</a>

</td>
<td>
<img width="500" height="1" />

📦 <a href="https://github.com/nhscc/qoverflow.solutions.hscc.bdpa.org">Demo source code</a>
 
🎒 <a href="https://github.com/nhscc/qoverflow.api.hscc.bdpa.org">API source code</a>

</td>
</tr>
</table>

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