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Discussion of Problem 1341. Devicediver_ru (free) Test 15, something strange [3] // Problem 1341. Device 19 Sep 2007 01:28 I send program with such procedure: void moveNorth(double dist) { w += dist / rEarth * 180 / pi; if (w > 91.0) n = (n - n) / n; } And got crash 15, but when i send void moveNorth(double dist) { w += dist / rEarth * 180 / pi; } i got accepted. So, i think device can reach north pole with test 15 input data, but it's impossible. bsu.mmf.team Re: Test 15, something strange [2] // Problem 1341. Device 3 Mar 2011 23:15 In this test the device flies too close to north pole. I got AC instead WA#15 when I changed PI from 3.14159265 to 3.141592653589. And I searched for a numerical mistake for 1 hour :) Ha-ha! Edited by author 03.03.2011 23:16 Solver Re: Test 15, something strange [1] // Problem 1341. Device 3 Aug 2026 10:49 acos(-1) for the most precise value of PI, but still had WA15 with this code int rlat = (int)round(lat * 180 * 1000 / pi); int rlon = (int)round(lon * 180 * 1000 / pi); while (rlon <= -180 * 1000) rlon += 360 * 1000; while (rlon > 180 * 1000) rlon -= 360 * 1000; printf("%s%d.%.3d\n", rlat < 0 ? "-" : "", abs(rlat) / 1000, abs(rlat) % 1000); printf("%s%d.%.3d\n", rlon < 0 ? "-" : "", abs(rlon) / 1000, abs(rlon) % 1000); Then got AC with this code lat *= 180 / pi; lon *= 180 / pi; while (lon <= -180) lon += 360; while (lon > 180) lon -= 360; printf("%.3lf\n%.3lf\n", lat, lon); So I guess there is something like "-0.000" expected by checker Edited by author 03.08.2026 11:20 Solver Re: Test 15, something strange // Problem 1341. Device 4 Aug 2026 11:15 P.S: Checked with asserts for "-0.000" and "-180.000" results - it didn't fire. Maybe that stuff with 'round' is wrong way to do it with integers (I actually did that precisely to avoid fiddling with such outputs) Alias aka Alexander Prudaev whats wrong with test 15? [2] // Problem 1341. Device 9 Oct 2007 13:06 Sandro (USU) Re: whats wrong with test 15? [1] // Problem 1341. Device 12 Oct 2007 00:24 Test 15 was incorrect, now it is fixed. 5 authors got AC. Solver Re: whats wrong with test 15? // Problem 1341. Device 3 Aug 2026 11:21 It is still not precisely correct, see the other thread Solver WA3 // Problem 1341. Device 3 Aug 2026 11:06 -0.001 -0.002 0 my integer-based output omitted "-" sign in that case MirceaS WA on Test 7 [1] // Problem 1341. Device 10 Oct 2015 02:07 Does anyone know the input for test 7? ASK Re: WA on Test 7 // Problem 1341. Device 11 Apr 2018 02:08 If you use fmod(...,360), remember that for negative input you get negative output. lizhuoran WA on test10 plz help // Problem 1341. Device 25 Nov 2015 05:59 Could someone give me some tests on test10? Alexandru Popa WA on test 3 ! [2] // Problem 1341. Device 5 Jul 2005 22:28 Can anybody help me with this test, please ? i hate my provider Re: WA on test 3 ! // Problem 1341. Device 7 Jan 2006 07:10 56 179 1111 Understand What Wrong? Mark_tven Re: WA on test 3 ! // Problem 1341. Device 18 Jul 2010 12:47 Coordinat's must be at [-180..180] Edited by author 18.07.2010 12:52 aSSault Test #13 WA [2] // Problem 1341. Device 10 Sep 2007 19:54 Can anybody give me this test ??? Vedernikoff 'Goryinyich' Sergey (HSE: АОП) Re: Test #13 WA [1] // Problem 1341. Device 10 Sep 2007 21:50 In 13th test numbers are delimited by spaces, not linebreaks. This is incorrect test, really... Sandro (USU) Re: Test #13 WA // Problem 1341. Device 12 Sep 2007 00:39 Yes, this test was incorrect, and it is fixed now. Thank you. If you know bugs in the other problems of Timus Online Judge, write about it to acm_support@acm.timus.ru. Tolstobrov Anatoliy[Ivanovo SPU] I need help. [5] // Problem 1341. Device 7 Jan 2006 08:20 What Ansewr for this tests. -0.000499 0 10053 0 0 10052 0 180 0 0 -179.9999 0 Dmitry 'Diman_YES' Kovalioff. Retired Here they are (+) [4] // Problem 1341. Device 7 Jan 2006 09:11 -0.000 13.948 0.000 -75.408 0.000 180.000 0.000 -180.000 i hate my provider Re: Here they are (+) [3] // Problem 1341. Device 8 Jan 2006 01:27 [deleted] Edited by author 13.01.2006 03:19 Tolstobrov Anatoliy[Ivanovo SPU] † [2] // Problem 1341. Device 10 Jan 2006 01:19 [deleted] Edited by author 13.01.2006 03:11 Tolstobrov Anatoliy[Ivanovo SPU] Now AC [1] // Problem 1341. Device 12 Jan 2006 10:02 [deleted] :) Formula right But in test 13 L, W, Dist On first line BUT in solution written on first, second, third lines. Edited by author 13.01.2006 03:10 Tolstobrov Anatoliy[Ivanovo SPU] † !! Now AC !!! † // Problem 1341. Device 15 Jan 2006 03:49 My code only 198 bytes. Pasha Could anyone explain me, can the "Device" reach the Northen Pole? [1] // Problem 1341. Device 25 Jun 2005 00:18 If it can, what will it do after it reached the Nothern Pole? Will it move at the south along diametrically opposite meridian or it will stop? Please, give me a hint, I have Wrong Answer at Test 15. Dmitry 'Diman_YES' Kovalioff. Retired Read the definition carefully: "No, it didn’t reach the Pole". So such situation is impossible (-) // Problem 1341. Device 25 Jun 2005 17:38 Dmitry 'Diman_YES' Kovalioff. Retired This problem's geometry is so obvious - my solution is less than 300 bytes :) (-) [1] // Problem 1341. Device 21 Feb 2005 21:32 Yuanming YU, Frank Me too (-) // Problem 1341. Device 11 Jun 2005 22:10 [SPbSU ITMO] Dennis Yolkin Why WA? Source here... (+) // Problem 1341. Device 29 May 2005 17:31 #include <stdio.h> #include <math.h> #define r 6400.0 #define PI 3.141592653589 #define EPS 1e-8 void norm(double &s, double &d) { while (s > PI) s -= PI; while (s < -PI) s += PI; while (d > 2*PI) d -= 2*PI; while (d < -2*PI) d += 2*PI; } int main(void) { //freopen("input.txt", "r", stdin); //freopen("output.txt", "w", stdout); double s0, d0, sq = 0.0; scanf("%lf %lf %lf", &s0, &d0, &sq); s0 = s0*PI/180; d0 = d0*PI/180; s0 += sq/r; norm(s0, d0); d0 += sq/(r*cos(s0)); norm(s0, d0); s0 -= sq/r; norm(s0, d0); d0 -= sq/(r*cos(s0)); norm(s0, d0); printf("%.3lf\n%.3lf\n", s0*180/PI, d0*180/PI); return 0; }
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