Hello Codeforces!↵
↵
On [contest_time:1334] [contest:1334] will start.↵
↵
Series of Educational Rounds continue being held as [Harbour.Space University](https://harbour.space/) initiative! You can read the details about the cooperation between [Harbour.Space University](https://harbour.space/) and Codeforces in the <a href="http://codeforces.me/blog/entry/51208">blog post</a>.↵
↵
This round will be **rated for the participants with rating lower than 2100**. It will be held on extended ICPC rules. The penalty for each incorrect submission until the submission with a full solution is 10 minutes. After the end of the contest you will have 12 hours to hack any solution you want. You will have access to copy any solution and test it locally.↵
↵
You will be given **6 or 7 problems** and **2 hours** to solve them.↵
↵
The problems were invented and prepared by Roman [user:Roms,2020-04-09] Glazov, Adilbek [user:adedalic,2020-04-09] Dalabaev, Vladimir [user:vovuh,2020-04-09] Petrov, Ivan [user:BledDest,2020-04-09] Androsov, Maksim [user:Ne0n25,2020-04-09] Mescheryakov and me. Also huge thanks to Mike [user:MikeMirzayanov,2020-04-09] Mirzayanov for great systems Polygon and Codeforces.↵
↵
Good luck to all the participants!↵
↵
Our friends at Harbour.Space also have a message for you:↵
↵
<img alt="Codeforces and Harbour.Space" src="https://codeforces.me/predownloaded/82/52/8252d924368cf9ef08db715a08861eaea55e12b2.png" style="float:center;height: 250px; margin: 10px; max-width:50%;"/>↵
↵
_Hey Codeforces,_↵
↵
_What a crazy month it’s been!_ ↵
↵
_We hope you and your loved ones are taking care of one another and catching up on everything you didn’t have time for on your normal schedules._ ↵
↵
_We’ve temporarily closed our physical campus and moved our classes online. It’s not as bad as it sounds though — we’ve always known the future is digital, so we were already preparing for this moment. Either way, we’re back._ ↵
↵
_**SPECIAL PRIZE FOR EDU ROUND 85**_↵
↵
_This digital transformation opens the door to some pretty awesome new opportunities that allow us to get closer to our community, no matter where in the world they are._↵
↵
_That’s why we have a special prize for the next Educational Round, a space in a course of your choice from our Computer Science or Data Science Programs. You’ll be able to study online with us for 1, 2 or 3 weeks under some of the best Data and Computer Scientists in the world, with all fees on us._ ↵
↵
_**The prize will be for the top 3 users who have confirmed their desire to participate in this competition. To sign up for it, leave us your handle in the form below.**_↵
↵
_Enrollment in the course you will participate in will depend upon the availability of the course, as well as the prerequisites required for that course._↵
↵
_We hope this provides you with extra incentive for the round, and we’re looking forward to seeing some of you soon!_ ↵
↵
<center style="margin:2.5em;">↵
<a href="https://docs.google.com/forms/d/e/1FAIpQLSdq8WFmQj29ndFLWKohPXenacGfoaxsMewtXMaA8KK9bSYNFQ/viewform?usp=sf_link" style="text-decoration:none; font-size:16px; background-color:#523996; color:white; font-weight:bold; padding:0.5em 1em;">PARTICIPATE</a>↵
</center> ↵
↵
↵
_**FULL SCHOLARSHIPS FOR BACHELOR’S PROGRAM**_↵
↵
_On a different note, we’re happy to announce that we’re offering full scholarships for the most talented high school students who want to study in our **Computer Science or Data Science Bachelor’s programs** at our university._ ↵
↵
_At the moment, we have two types of scholarships available:_ ↵
↵
_**The Full Scholarship.** For the best of the best — all tuition costs are covered by the university. Just show up and show us what you’ve got._ ↵
↵
_**The Co-Creator Scholarship.** For those who want to help us change education — all tuition costs are covered by the university, and in addition to your studies, you get to help the Harbour.Space team on their mission for 4 hours/day, getting valuable practical experience in the field and working in a team with some of the brightest young professionals in town._ ↵
↵
_Fill out the form below and we will contact you for the next steps!_ ↵
↵
<center style="margin:2.5em;">↵
<a href="https://docs.google.com/forms/d/e/1FAIpQLSclYfa_miStTgn6XubTsEHATUT8bRjtVPBBwGcrkp6EkgxavQ/viewform" style="text-decoration:none; font-size:16px; background-color:#00796B; color:white; font-weight:bold; padding:0.5em 1em;">FILL OUT FORM</a>↵
</center> ↵
↵
_Looking forward to seeing you kick some ass in the next Educational Round, and stay safe!_ ↵
↵
_Best,_↵
_Harbour.Space University_↵
↵
Congratulations to the winners:↵
<table class='bordertable'>↵
<tbody>↵
<tr>↵
<th>Rank</th>↵
<th>Competitor</th>↵
<th>Problems Solved</th>↵
<th>Penalty</th>↵
</tr>↵
<tr>↵
<td>1</td>↵
<td>[user:MiFaFaOvO, 2020-04-10]</td>↵
<td>7</td>↵
<td>153</td>↵
</tr>↵
<tr>↵
<td>2</td>↵
<td>[user:jiangly, 2020-04-10]</td>↵
<td>7</td>↵
<td>195</td>↵
</tr>↵
<tr>↵
<td>3</td>↵
<td>[user:amnesiac_dusk, 2020-04-10]</td>↵
<td>7</td>↵
<td>244</td>↵
</tr>↵
<tr>↵
<td>4</td>↵
<td>[user:risujiroh, 2020-04-10]</td>↵
<td>7</td>↵
<td>290</td>↵
</tr>↵
<tr>↵
<td>5</td>↵
<td>[user:bmerry, 2020-04-10]</td>↵
<td>7</td>↵
<td>310</td>↵
</tr>↵
</tbody>↵
</table>↵
↵
↵
Congratulations to the best hackers:↵
<table class='bordertable'>↵
<tbody>↵
<tr>↵
<th>Rank</th>↵
<th>Competitor</th>↵
<th>Hack Count</th>↵
</tr>↵
<tr>↵
<td>1</td>↵
<td>[user:greencis, 2020-04-10]</td>↵
<td><b><font color="green">174</font></b><b>:<font color="red">-53</font></b></td></td>↵
</tr>↵
<tr>↵
<td>2</td>↵
<td>[user:Java, 2020-04-10]</td>↵
<td><b><font color="green">94</font></b><b>:<font color="red">-8</font></b></td></td>↵
</tr>↵
<tr>↵
<td>3</td>↵
<td>[user:hackVerly, 2020-04-10]</td>↵
<td><b><font color="green">55</font></b><b>:<font color="red">-2</font></b></td></td>↵
</tr>↵
<tr>↵
<td>4</td>↵
<td>[user:_BadLoser, 2020-04-10]</td>↵
<td><b><font color="green">55</font></b><b>:<font color="red">-10</font></b></td></td>↵
</tr>↵
<tr>↵
<td>5</td>↵
<td>[user:TheScrasse, 2020-04-10]</td>↵
<td><b><font color="green">40</font></b></td></td>↵
</tr>↵
</tbody>↵
</table>↵
2405 successful hacks and 1303 unsuccessful hacks were made in total!↵
↵
And finally people who were the first to solve each problem:↵
<table class='bordertable'>↵
<tbody>↵
<tr>↵
<th>Problem</th>↵
<th>Competitor</th>↵
<th>Penalty</th>↵
</tr>↵
<tr>↵
<td>A</td>↵
<td>[user:Isabella_Vesterbury, 2020-04-10]</td>↵
<td>0:02</td>↵
</tr>↵
<tr>↵
<td>B</td>↵
<td>[user:arknave, 2020-04-10]</td>↵
<td>0:02</td>↵
</tr>↵
<tr>↵
<td>C</td>↵
<td>[user:Siberian, 2020-04-10]</td>↵
<td>0:03</td>↵
</tr>↵
<tr>↵
<td>D</td>↵
<td>[user:Sevlll, 2020-04-10]</td>↵
<td>0:16</td>↵
</tr>↵
<tr>↵
<td>E</td>↵
<td>[user:LJC00118, 2020-04-10]</td>↵
<td>0:19</td>↵
</tr>↵
<tr>↵
<td>F</td>↵
<td>[user:IceWiz, 2020-04-10]</td>↵
<td>0:31</td>↵
</tr>↵
<tr>↵
<td>G</td>↵
<td>[user:9baka_Cirno, 2020-04-10]</td>↵
<td>0:25</td>↵
</tr>↵
</tbody>↵
</table>↵
↵
**UPD:** [Editorial is out](https://codeforces.me/blog/entry/75877)
↵
On [contest_time:1334] [contest:1334] will start.↵
↵
Series of Educational Rounds continue being held as [Harbour.Space University](https://harbour.space/) initiative! You can read the details about the cooperation between [Harbour.Space University](https://harbour.space/) and Codeforces in the <a href="http://codeforces.me/blog/entry/51208">blog post</a>.↵
↵
This round will be **rated for the participants with rating lower than 2100**. It will be held on extended ICPC rules. The penalty for each incorrect submission until the submission with a full solution is 10 minutes. After the end of the contest you will have 12 hours to hack any solution you want. You will have access to copy any solution and test it locally.↵
↵
You will be given **6 or 7 problems** and **2 hours** to solve them.↵
↵
The problems were invented and prepared by Roman [user:Roms,2020-04-09] Glazov, Adilbek [user:adedalic,2020-04-09] Dalabaev, Vladimir [user:vovuh,2020-04-09] Petrov, Ivan [user:BledDest,2020-04-09] Androsov, Maksim [user:Ne0n25,2020-04-09] Mescheryakov and me. Also huge thanks to Mike [user:MikeMirzayanov,2020-04-09] Mirzayanov for great systems Polygon and Codeforces.↵
↵
Good luck to all the participants!↵
↵
Our friends at Harbour.Space also have a message for you:↵
↵
<img alt="Codeforces and Harbour.Space" src="https://codeforces.me/predownloaded/82/52/8252d924368cf9ef08db715a08861eaea55e12b2.png" style="float:center;height: 250px; margin: 10px; max-width:50%;"/>↵
↵
_Hey Codeforces,_↵
↵
_What a crazy month it’s been!_ ↵
↵
_We hope you and your loved ones are taking care of one another and catching up on everything you didn’t have time for on your normal schedules._ ↵
↵
_We’ve temporarily closed our physical campus and moved our classes online. It’s not as bad as it sounds though — we’ve always known the future is digital, so we were already preparing for this moment. Either way, we’re back._ ↵
↵
_**SPECIAL PRIZE FOR EDU ROUND 85**_↵
↵
_This digital transformation opens the door to some pretty awesome new opportunities that allow us to get closer to our community, no matter where in the world they are._↵
↵
_That’s why we have a special prize for the next Educational Round, a space in a course of your choice from our Computer Science or Data Science Programs. You’ll be able to study online with us for 1, 2 or 3 weeks under some of the best Data and Computer Scientists in the world, with all fees on us._ ↵
↵
_**The prize will be for the top 3 users who have confirmed their desire to participate in this competition. To sign up for it, leave us your handle in the form below.**_↵
↵
_Enrollment in the course you will participate in will depend upon the availability of the course, as well as the prerequisites required for that course._↵
↵
_We hope this provides you with extra incentive for the round, and we’re looking forward to seeing some of you soon!_ ↵
↵
<center style="margin:2.5em;">↵
<a href="https://docs.google.com/forms/d/e/1FAIpQLSdq8WFmQj29ndFLWKohPXenacGfoaxsMewtXMaA8KK9bSYNFQ/viewform?usp=sf_link" style="text-decoration:none; font-size:16px; background-color:#523996; color:white; font-weight:bold; padding:0.5em 1em;">PARTICIPATE</a>↵
</center> ↵
↵
↵
_**FULL SCHOLARSHIPS FOR BACHELOR’S PROGRAM**_↵
↵
_On a different note, we’re happy to announce that we’re offering full scholarships for the most talented high school students who want to study in our **Computer Science or Data Science Bachelor’s programs** at our university._ ↵
↵
_At the moment, we have two types of scholarships available:_ ↵
↵
_**The Full Scholarship.** For the best of the best — all tuition costs are covered by the university. Just show up and show us what you’ve got._ ↵
↵
_**The Co-Creator Scholarship.** For those who want to help us change education — all tuition costs are covered by the university, and in addition to your studies, you get to help the Harbour.Space team on their mission for 4 hours/day, getting valuable practical experience in the field and working in a team with some of the brightest young professionals in town._ ↵
↵
_Fill out the form below and we will contact you for the next steps!_ ↵
↵
<center style="margin:2.5em;">↵
<a href="https://docs.google.com/forms/d/e/1FAIpQLSclYfa_miStTgn6XubTsEHATUT8bRjtVPBBwGcrkp6EkgxavQ/viewform" style="text-decoration:none; font-size:16px; background-color:#00796B; color:white; font-weight:bold; padding:0.5em 1em;">FILL OUT FORM</a>↵
</center> ↵
↵
_Looking forward to seeing you kick some ass in the next Educational Round, and stay safe!_ ↵
↵
_Best,_↵
_Harbour.Space University_↵
↵
Congratulations to the winners:↵
<table class='bordertable'>↵
<tbody>↵
<tr>↵
<th>Rank</th>↵
<th>Competitor</th>↵
<th>Problems Solved</th>↵
<th>Penalty</th>↵
</tr>↵
<tr>↵
<td>1</td>↵
<td>[user:MiFaFaOvO, 2020-04-10]</td>↵
<td>7</td>↵
<td>153</td>↵
</tr>↵
<tr>↵
<td>2</td>↵
<td>[user:jiangly, 2020-04-10]</td>↵
<td>7</td>↵
<td>195</td>↵
</tr>↵
<tr>↵
<td>3</td>↵
<td>[user:amnesiac_dusk, 2020-04-10]</td>↵
<td>7</td>↵
<td>244</td>↵
</tr>↵
<tr>↵
<td>4</td>↵
<td>[user:risujiroh, 2020-04-10]</td>↵
<td>7</td>↵
<td>290</td>↵
</tr>↵
<tr>↵
<td>5</td>↵
<td>[user:bmerry, 2020-04-10]</td>↵
<td>7</td>↵
<td>310</td>↵
</tr>↵
</tbody>↵
</table>↵
↵
↵
Congratulations to the best hackers:↵
<table class='bordertable'>↵
<tbody>↵
<tr>↵
<th>Rank</th>↵
<th>Competitor</th>↵
<th>Hack Count</th>↵
</tr>↵
<tr>↵
<td>1</td>↵
<td>[user:greencis, 2020-04-10]</td>↵
<td><b><font color="green">174</font></b><b>:<font color="red">-53</font></b></td></td>↵
</tr>↵
<tr>↵
<td>2</td>↵
<td>[user:Java, 2020-04-10]</td>↵
<td><b><font color="green">94</font></b><b>:<font color="red">-8</font></b></td></td>↵
</tr>↵
<tr>↵
<td>3</td>↵
<td>[user:hackVerly, 2020-04-10]</td>↵
<td><b><font color="green">55</font></b><b>:<font color="red">-2</font></b></td></td>↵
</tr>↵
<tr>↵
<td>4</td>↵
<td>[user:_BadLoser, 2020-04-10]</td>↵
<td><b><font color="green">55</font></b><b>:<font color="red">-10</font></b></td></td>↵
</tr>↵
<tr>↵
<td>5</td>↵
<td>[user:TheScrasse, 2020-04-10]</td>↵
<td><b><font color="green">40</font></b></td></td>↵
</tr>↵
</tbody>↵
</table>↵
2405 successful hacks and 1303 unsuccessful hacks were made in total!↵
↵
And finally people who were the first to solve each problem:↵
<table class='bordertable'>↵
<tbody>↵
<tr>↵
<th>Problem</th>↵
<th>Competitor</th>↵
<th>Penalty</th>↵
</tr>↵
<tr>↵
<td>A</td>↵
<td>[user:Isabella_Vesterbury, 2020-04-10]</td>↵
<td>0:02</td>↵
</tr>↵
<tr>↵
<td>B</td>↵
<td>[user:arknave, 2020-04-10]</td>↵
<td>0:02</td>↵
</tr>↵
<tr>↵
<td>C</td>↵
<td>[user:Siberian, 2020-04-10]</td>↵
<td>0:03</td>↵
</tr>↵
<tr>↵
<td>D</td>↵
<td>[user:Sevlll, 2020-04-10]</td>↵
<td>0:16</td>↵
</tr>↵
<tr>↵
<td>E</td>↵
<td>[user:LJC00118, 2020-04-10]</td>↵
<td>0:19</td>↵
</tr>↵
<tr>↵
<td>F</td>↵
<td>[user:IceWiz, 2020-04-10]</td>↵
<td>0:31</td>↵
</tr>↵
<tr>↵
<td>G</td>↵
<td>[user:9baka_Cirno, 2020-04-10]</td>↵
<td>0:25</td>↵
</tr>↵
</tbody>↵
</table>↵
↵
**UPD:** [Editorial is out](https://codeforces.me/blog/entry/75877)
