Have u always wanted to see what 1-gon or Monogon looks like but u arent a premium 1-gon fan?

Well now u get the chance for FREE

Spoiler:

I bet 100000$ if thats not him

Good morning everyone.

I wanted to do something other than cp these days since IOI selection is coming soon.So i decided to make something like an checker to find coupons.

To be more detailed there is a popular site in my country where you order food online.However there is a coupon place were you put a coupon number/string an you get some money off.

So the guy who made the site is not good and he made it such that the coupons are always of the form foodlove and some number after.

Like a coupon might be foodlove133 ,foodlove4556 .So its foodlove and a number with at most 10 digits.

But not all coupons are valid.

So i want to find someone with experience before to help me make a program that automatically checks every coupon and finds all that are valid. You will be rewarded good to help me to this.

Also this has nothing to do with cp, its more on the practical side rather than the algorithms side.

Dm me to know more and to help me.

Thank you!

Good morning/night/afteroon Codeforces Community,

Recently i saw the prices in Codechef and Codeforces it made me wonder how come Codehef gives much more money than codeforces and when i say much more i mean it.

The thing is that Codechef gives money to setting,testing,translation and editorialists and Codeforces only to setting as far as i know.

Lets look at the prices in Codechef (seting only):

Now from a friend of mine that is setting in Codeforces he told me that the whole Div 2 he and another one are preparing will be 200-220 euros in total.

Isnt that crazy?

That amount of money from a high quality contest in codeforces is same as a hard problem in Codechef.

I mean look at the price to set a Codechef whole contest: it comes around 530 USD.

Now i know its USD and not Euro cause i thinnk many people will say that i confused it but no i have done the calculations and i can see that even in euros its much.

One reason is that an admin told me that in Codechef Easy-Medium is same as Div 1 A / Div 2 C problem Codeforces so that means a hard probem in Codechef is around Div 1 C althought i dont believe it at all and i think most people wont believe it.So i dont think this is the reason.So anyone that has experience before and knows something please comment below.

Now lets go to the part of translation:

Testing:

And Editorialist part:

I mean here its just prices so since Codeforces doesnt pay these things there isnt much to say than just a big WHY?

Is it becuase more work,participants,what is it?

I dont think its any of those but i think a reason is maybe because Codeforces spends a lot money to preserve such good site and Codechef doesnt (thats why they have this whole situation with cheaters).

But still of course Codechef preserves its site so i still dont think it's this

It's not that i have something against Codechef or Codeforces plus that is better to whom sets problems in Codechef,i am just wondering.

I may be totally wrong but i was just trying to justify the things i saw.

Thanks

CF is ending Its coming and its near.......

No new problems are found

Do you know any problems that need fusion trees (even in theoretical cp)

I found only a wiki and some MIT lectures but not any good problems that needed it

As far as i know its some good hard but mostly theoretical thing (out of contests and cp material).

I know only 1 problem that needed it to get to O(1).

Any help would be wanted (especially from MIT cs students they must have done it).