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Discussion of Problem 1328. FireballVelea Alex Tricky tests but still WA 14 // Problem 1328. Fireball 3 Dec 2011 16:41 Hello, my friends ! I composed a very interesting test 1000 10 2 5 5 5 5 my program found 135.00, obviously correct. Then, I tested this 1000 10 3 5 5 5 5 and I got 116.57. This is correct, too. For the following test 10 10 4 5 5 5 5 my answer is 45.00 Is there any different kind of data set for I get WA 14 ? Valentin Pimenov Question about output the angle. [3] // Problem 1328. Fireball 17 Feb 2005 13:47 >> Angle in degrees (with 2 digits after decimal point), that gives the desired direction of fireball. If there are several such angles your program should output the minimal one. 1. Could angle be negative? 2. If YES, then does angle should be minimal "BY MODULO" OR minimal "BY VALUE"? Thanks. Aleksey (BMSTU IU7) Re: Question about output the angle. [2] // Problem 1328. Fireball 18 Feb 2005 01:35 0.00<=Angle<360.0 Denis Koshman Re: Question about output the angle. [1] // Problem 1328. Fireball 19 Aug 2008 07:43 Rounded angle may probably become 360.00. Anyway, I had no protection against that and got AC. Astekinane Re: Question about output the angle. // Problem 1328. Fireball 8 Oct 2011 18:15 When I add "if (fi==0) fi=360;" in my code I got WA#2, until this moment I got WA#14. Edited by author 08.10.2011 18:16 Pavel Egorov (USU) Sorry. Problem specification is not correct. It will be corrected soon. [2] // Problem 1328. Fireball 20 Oct 2004 22:14 In fact, you should consider, that until the last collision, fireball can fly through the wizard and the target. Sorry once again... Problem Author На самом деле надо считать, что вплоть до последнего столкновения файрболл может пролетать сквозь чародея и цель. Еще раз прошу прощения. Автор задачи. Vladimir Yakovlev (USU) Text of problem 1328 was modified (-) [1] // Problem 1328. Fireball 21 Oct 2004 02:09 Joseph Puh the Battle Bear But it's still unclear // Problem 1328. Fireball 6 Aug 2011 21:11 Text is still unclear... if fireball is passing through the enemy and not loosing its level, so why do 0-level one hit the enemy? this contradicts to statement (fireball can pass through any obstacle except wall)... even more - why in this case 0-level fireball is not hitting us? Edited by author 06.08.2011 21:40 strider to admins [2] // Problem 1328. Fireball 21 Jan 2009 09:30 In my solution there is a product "width * N" squared, wich in maximum (1000*100)^2 = 10^10 gives more than INT_MAX. I use signed int and I've still got AC, while my program gives -1.#IND on the test 1000 1000 100 1 1 4 5 I suppose you should add boundary tests or soften condition to, for example, "max width and hight <= 100". Sandro (USU) Re: to admins [1] // Problem 1328. Fireball 22 Jan 2009 10:45 Statement is updated. Read Site news. Vedernikoff Sergey (HSE: EconomicsForever!) Re: to admins // Problem 1328. Fireball 22 Jan 2009 16:31 I can create new tests for this problem with N up to 100. Since with current limitations the problem has much more easier solution... KRSU Team #1 Может ли файерболл попасть в мага? [2] // Problem 1328. Fireball 16 Oct 2004 16:27 subj Lassie Re: Может ли файерболл попасть в мага? [1] // Problem 1328. Fireball 16 Oct 2004 21:13 Yes:)) Edited by author 16.10.2004 21:14 Denis Koshman Re: Может ли файерболл попасть в мага? // Problem 1328. Fireball 19 Aug 2008 07:46 Yes it can, but it will fly through. I also considered case when n==0 && x1==x2 && y1==y2. In this case I output 0.00 DWED Sample output. [1] // Problem 1328. Fireball 27 Oct 2004 18:47 Why the sample output is 45.0 but not 315.0? 128-101=5+10+10+(10-8) 128-101<>5+10+10+8 Denis Koshman Re: Sample output. // Problem 1328. Fireball 19 Aug 2008 07:44 I nad 315.00 for a long time till I fixed all bugs :) Note that situation mirrors around OX/OY when you hit a wall. The Punisher What is the answer for this testcase? (My program received #WA 14) [1] // Problem 1328. Fireball 29 Aug 2007 19:54 What is the answer for the following testcase? 10 10 2 9 9 8 8 Is the answer equals to 45.00 ? Thanks for help. Edited by author 30.08.2007 01:14 Denis Koshman Re: What is the answer for this testcase? (My program received #WA 14) // Problem 1328. Fireball 19 Aug 2008 07:41 Yes Vedernikoff Sergey For people with WA #13 // Problem 1328. Fireball 25 Jun 2006 17:35 Try this test. When I've found this bug, my program received AC: Sample input: 3 3 1 2 2 1 1 Sample output: 108.43 Good luck! ACM.Tolstobrov_Anatoliy[Ivanovo SPU] you got WA 13 ? it help you. [2] // Problem 1328. Fireball 1 Dec 2005 00:58 4 1000 2 2 10 2 1 Answer 250.02 Good Luck & Have Fun Mykola [LNU] Re: you got WA 13 ? it help you. [1] // Problem 1328. Fireball 6 Dec 2005 20:38 My program returns 250.02 but I still have WA on #13 ACM.Tolstobrov_Anatoliy[Ivanovo SPU] Re: you got WA 13 ? it help you. // Problem 1328. Fireball 19 Dec 2005 03:07 4 1000 2 2 990 2 999 Answer 70.02 1000 4 2 10 2 1 2 Answer 160.02 1000 4 2 990 2 999 2 Answer 19.98 Now I think you Got AC. P.S. I wish you good luck. :) Edited by author 19.12.2005 03:08 Micha WA on 14 // Problem 1328. Fireball 27 Oct 2005 21:53 please can someone give me test#14 cause i realy don't know what's wrong Innovative Cat. WARNING I've tested out case 16, but I still can't understand why I'm in wrong. [5] // Problem 1328. Fireball 19 Oct 2004 10:55 that's: 10 10 6 5 5 5 5 my answer is 11.31, and I've drawn the picture, everything is right! could anybody tell me what the standard output is? what's your output? Dmitry 'Diman_YES' Kovalioff My AC program outputs 45.00 (-) [2] // Problem 1328. Fireball 19 Oct 2004 11:08 Innovative Cat. sorry. i can't log onto icq now. but....... [1] // Problem 1328. Fireball 19 Oct 2004 11:22 I think if the answer is 45.00, the fireball has ALREADY touched B, with only 2 touched of the wall!!!????!!!! I output "45.00", and passed case 16...faint Innovative Cat. my friend is adding you via icq now. // Problem 1328. Fireball 19 Oct 2004 11:27 Safe Bird (USU) ACed, the problem description(at least the english version) is INCORRECT! [1] // Problem 1328. Fireball 19 Oct 2004 11:55 The direction of throw is selected such way that thrown fireball hits the target exactly after N collisions with the room walls. So (N+1)th collision is the collision with the target I meant that the fireball should NOT touch B during the first N collisions. But in fact, I could. and that touch won't be considered a collision!!!!!!!!! Innovative Cat. please change the description soon. thank you very much. // Problem 1328. Fireball 19 Oct 2004 11:57 Dmitry 'Diman_YES' Kovalioff Good problem. BTW, the fireball can fly through the wizard without explosion (-) [2] // Problem 1328. Fireball 17 Oct 2004 19:06 Innovative Cat. yeah, but still wa on 10:'( [1] // Problem 1328. Fireball 19 Oct 2004 08:49 Innovative Cat. wa on 16 now. that's the one with same A&B, but n<>0...I donno why.. // Problem 1328. Fireball 19 Oct 2004 10:04
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