Hello, Codeforces!↵
↵
We are glad to invite you to participate in Codeforces Round #449 (both Div. 1 and Div. 2) which will be held on [December 2, 17:05 MSK](http://www.timeanddate.com/worldclock/fixedtime.html?day=2&month=12&year=2017&hour=17&min=5&sec=0&p1=166).↵
↵
There are seven problems, created by [user:mcfx,2017-12-01], [user:ODT,2017-05-01], [user:dogther,2017-12-01].↵
↵
This round is about the happiest girl in the world — Chtholly Nota Seniorious~!↵
↵
You will help Chtholly, Nephren, Ithea and Willem (characters in the great novel and anime ["What Do You Do at the End of the World? Are You Busy? Will You Save Us?"](https://en.wikipedia.org/wiki/WorldEnd)) to solve some problems.↵
↵
![ ](https://i.loli.net/2017/12/01/5a21303d1f40a.png)↵
↵
([Image](https://www.pixiv.net/member_illust.php?mode=medium&illust_id=62776856) by [gin_sei56(・.8・)](https://www.pixiv.net/member.php?id=6355256) on pixiv)↵
↵
This round is our first round on Codeforces.↵
↵
Thanks to [user:zcyskyaa,2017-12-01] for helping us, [user:Arpa,2017-12-01], [user:cyand1317,2017-12-01] and [user:Tommyr7,2017-12-01] for testing the round, [user:gritukan,2017-12-01] and [user:KAN,2017-12-01] for round coordination and [user:MikeMirzayanov,2017-12-01] for Codeforces and Polygon platforms.↵
↵
This round has 5 problems in each division and you have 2 hours to solve them.↵
↵
The scoring will be announced shortly before the start of the contest.↵
↵
The contest is rated for both Div. 1 and Div. 2 contestants.↵
↵
It's recommended for both divisions to read through the [Interactive Problems Guide](http://codeforces.me/blog/entry/45307) before the round.↵
↵
Wish everyone high rating and accepted submissions!↵
↵
Upd: Scoring is **500-1000-1500-2000-2500**↵
↵
Upd2: Congratulations to the winners:↵
↵
Div 1:↵
↵
1. [user:MrDindows,2017-12-01]↵
↵
2. [user:bmerry,2017-12-01]↵
↵
3. [user:krismaz,2017-12-01]↵
↵
4. [user:Shik,2017-12-01]↵
↵
5. [user:ainta,2017-12-01]↵
↵
Div 2:↵
↵
1. [user:blatuitorulmlc,2017-12-01]↵
↵
2. [user:lumibons,2017-12-01]↵
↵
3. [user:Starlit,2017-12-01]↵
↵
4. [user:Grevozin,2017-12-01]↵
↵
5. [user:lyoz,2017-12-01]↵
↵
The editorial will be posted soon.↵
↵
Upd3: [Editorial](http://codeforces.me/blog/entry/56135)↵
↵
We are glad to invite you to participate in Codeforces Round #449 (both Div. 1 and Div. 2) which will be held on [December 2, 17:05 MSK](http://www.timeanddate.com/worldclock/fixedtime.html?day=2&month=12&year=2017&hour=17&min=5&sec=0&p1=166).↵
↵
There are seven problems, created by [user:mcfx,2017-12-01], [user:ODT,2017-05-01], [user:dogther,2017-12-01].↵
↵
This round is about the happiest girl in the world — Chtholly Nota Seniorious~!↵
↵
You will help Chtholly, Nephren, Ithea and Willem (characters in the great novel and anime ["What Do You Do at the End of the World? Are You Busy? Will You Save Us?"](https://en.wikipedia.org/wiki/WorldEnd)) to solve some problems.↵
↵
![ ](https://i.loli.net/2017/12/01/5a21303d1f40a.png)↵
↵
([Image](https://www.pixiv.net/member_illust.php?mode=medium&illust_id=62776856) by [gin_sei56(・.8・)](https://www.pixiv.net/member.php?id=6355256) on pixiv)↵
↵
This round is our first round on Codeforces.↵
↵
Thanks to [user:zcyskyaa,2017-12-01] for helping us, [user:Arpa,2017-12-01], [user:cyand1317,2017-12-01] and [user:Tommyr7,2017-12-01] for testing the round, [user:gritukan,2017-12-01] and [user:KAN,2017-12-01] for round coordination and [user:MikeMirzayanov,2017-12-01] for Codeforces and Polygon platforms.↵
↵
This round has 5 problems in each division and you have 2 hours to solve them.↵
↵
The scoring will be announced shortly before the start of the contest.↵
↵
The contest is rated for both Div. 1 and Div. 2 contestants.↵
↵
It's recommended for both divisions to read through the [Interactive Problems Guide](http://codeforces.me/blog/entry/45307) before the round.↵
↵
Wish everyone high rating and accepted submissions!↵
↵
Upd: Scoring is **500-1000-1500-2000-2500**↵
↵
Upd2: Congratulations to the winners:↵
↵
Div 1:↵
↵
1. [user:MrDindows,2017-12-01]↵
↵
2. [user:bmerry,2017-12-01]↵
↵
3. [user:krismaz,2017-12-01]↵
↵
4. [user:Shik,2017-12-01]↵
↵
5. [user:ainta,2017-12-01]↵
↵
Div 2:↵
↵
1. [user:blatuitorulmlc,2017-12-01]↵
↵
2. [user:lumibons,2017-12-01]↵
↵
3. [user:Starlit,2017-12-01]↵
↵
4. [user:Grevozin,2017-12-01]↵
↵
5. [user:lyoz,2017-12-01]↵
↵
The editorial will be posted soon.↵
↵
Upd3: [Editorial](http://codeforces.me/blog/entry/56135)↵