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Обсуждение задачи 1442. Дымолётный порошокDmitry 'Diman_YES' Kovalioff I have spend more than an hour, but... (+) [10] // Задача 1442. Дымолётный порошок 26 мар 2006 18:03 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. Dmitry 'Diman_YES' Kovalioff AC! The time limit may be beaten. Yes-s-s... ;) (-) // Задача 1442. Дымолётный порошок 26 мар 2006 22:17 {AESC USU} UdH-WiNGeR Re: I have spend more than an hour, but... (+) [8] // Задача 1442. Дымолётный порошок 27 мар 2006 00:35 It's not an optimization problem, it's just an easy math problem: AC in 0.001 ;) Burunduk1 Re: it's just an easy math problem [7] // Задача 1442. Дымолётный порошок 27 мар 2006 00:40 Is your solution O(1)? Dmitry 'Diman_YES' Kovalioff If so I want to know it ;) As for me I cannot deduce the formula (-) [5] // Задача 1442. Дымолётный порошок 27 мар 2006 09:27 Akcium Re: If so I want to know it ;) As for me I cannot deduce the formula (-) [4] // Задача 1442. Дымолётный порошок 28 мар 2006 00:46 We have 3 cones. 1 with round bottom and 2 with parabolic bottom. Edited by author 28.03.2006 00:47 Victor Barinov (TNU) Wow! It is SUPER solution! (+) [3] // Задача 1442. Дымолётный порошок 28 мар 2006 03:40 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!!! Tbilisi SU: Andrew Lutsenko Re: Wow! It is SUPER solution! (+) [2] // Задача 1442. Дымолётный порошок 30 мар 2006 22:41 Really a good hint. I was really surprised when found that volumes of both cones with parabollic bottoms are EQUAL =) svr Re: Wow! It is SUPER solution! (+) [1] // Задача 1442. Дымолётный порошок 15 окт 2007 18:53 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 Denis Koshman Re: Wow! It is SUPER solution! (+) // Задача 1442. Дымолётный порошок 5 сен 2008 19:01 Web integration: http://integrals.wolfram.com {AESC USU} UdH-WiNGeR Re: it's just an easy math problem // Задача 1442. Дымолётный порошок 27 мар 2006 17:39 Burunduk1 писал(a) 27 марта 2006 00:40 Is your solution O(1)? Yes AlexF [USTU Frogs] Question // Задача 1442. Дымолётный порошок 7 ноя 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 Antonov Yuri (USU) To admins ! Problem description ! [1] // Задача 1442. Дымолётный порошок 5 июн 2006 11:41 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 !!! Vladimir Yakovlev (USU) Re: To admins ! Problem description ! // Задача 1442. Дымолётный порошок 5 июн 2006 12:15 correct is "Output ... accurate to FOUR decimal places." problem statement is updated. KAV A new - HYPER - test should be added [3] // Задача 1442. Дымолётный порошок 4 апр 2006 18:41 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? ;) Dmitry 'Diman_YES' Kovalioff "The powder formed inside the box a regular cone". So such test is obviously incorrect (-) [1] // Задача 1442. Дымолётный порошок 4 апр 2006 19:16 KAV Re: "The powder formed inside the box a regular cone". So such test is obviously incorrect (-) // Задача 1442. Дымолётный порошок 4 апр 2006 20:39 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! Victor Barinov (TNU) Re: A new - HYPER - test should be added // Задача 1442. Дымолётный порошок 4 апр 2006 21:03 This dimentions are give like limits on radius and height of cone :-) jieqingren I Have a formula but WA#4 ???? [3] // Задача 1442. Дымолётный порошок 30 мар 2006 22:49 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. Victor Barinov (TNU) If a > r then ... [2] // Задача 1442. Дымолётный порошок 30 мар 2006 22:54 jieqingren Re: If a > r then ... // Задача 1442. Дымолётный порошок 30 мар 2006 23:03 What's a ? jieqingren Re: If a > r then ... // Задача 1442. Дымолётный порошок 30 мар 2006 23:18 Thank you very much .... I have AC!
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