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| Show all threads Hide all threads Show all messages Hide all messages | | Page 1 | | Question | AlexF [USTU Frogs] | 1442. Floo Powder | 7 Nov 2007 18:22 | 1 | Question AlexF [USTU Frogs] 7 Nov 2007 18:22 Please, tell me the volume of the smaller part of the cone in sample.
Edited by author 07.11.2007 18:23 | | To admins ! Problem description ! | Antonov Yuri (USU) | 1442. Floo Powder | 5 Jun 2006 12:15 | 2 | Some clarifications needed...
Eng version of description contains:
"Output the amount of the powder remaining in the box in cubic centimeters accurate to TWO decimal places."
Rus version :
"Output ... accurate to FOUR decimal places."
Sample output:
"Output ... accurate to SIX decimal places."
Please explain or specify more precisely !!! correct is
"Output ... accurate to FOUR decimal places."
problem statement is updated. | | A new - HYPER - test should be added | KAV | 1442. Floo Powder | 4 Apr 2006 21:03 | 4 | What for are the dimentions of the box given?
A suggestion is to add a test where r > 25 and the cone receives hyperbolic sections.
What do you think about it? ;) Yes, really :(. I didn't notice this phrase and thought that the task is much more difficult than it is. And I was pretty surprised when it had accepted, but after I found that it's easy :)
And, if to make a similar task where diameter can be more than the box side - it will be a really great one! This dimentions are give like limits on radius and height of cone :-) | | I Have a formula but WA#4 ???? | jieqingren | 1442. Floo Powder | 30 Mar 2006 23:18 | 4 | I have a formula but I have WA#4 ? Sqrt - is a only one function, that I use. All other members of formula use +,-,*,/ ? What's going on ?
Help, please!
And a question more!
They wrote that we need 4 symbols after comma, but in the sample - 6. I sent my program with both variants and got WA#4? How it can be?
Sorry for bad English. Thank you very much .... I have AC! | | I have spend more than an hour, but... (+) | Dmitry 'Diman_YES' Kovalioff | 1442. Floo Powder | 5 Sep 2008 19:01 | 11 | My solution is correct, but I still cannot solve this problem fast. Maybe the time limit should be increased? I doubt it is an optimization problem. It's not an optimization problem, it's just an easy math problem:
AC in 0.001 ;) We have 3 cones. 1 with round bottom and 2 with parabolic bottom.
Edited by author 28.03.2006 00:47 I spend whole day for finding formula by treble intagrals, but all what I got was cumbersome formulas, and when i read you hint I solved it immediately :-)... I was SO happy :-)
THANK YOU VERY MUCH!!! Really a good hint. I was really surprised when found that volumes of both cones with parabollic bottoms are EQUAL =) Better to use Simpson numeric integration by height with respect to area of horizontal segment of circle of constant width.
Edited by author 15.10.2007 19:14
Edited by author 15.10.2007 19:14 Is your solution O(1)? Yes |
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