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Common Boardilya trofimov To Admin. Test #3 is wrong [2] // Problem 1914. Titan Ruins: Serial Control 7 Feb 2013 17:58 1 0 Must be "Death" Sandro (USU) Re: To Admin. Test #3 is wrong [1] // Problem 1914. Titan Ruins: Serial Control 7 Feb 2013 19:37 Why? You can rotate the only accessible ring 1/2 turns, and the second ring will stay in its initial position. ilya trofimov Re: To Admin. Test #3 is wrong // Problem 1914. Titan Ruins: Serial Control 7 Feb 2013 19:56 Thanks. I was mistaken. Hanzbrow (TNU) KCC test17 [3] // Problem 1748. The Most Complex Number 30 Jan 2010 00:59 really curious about it, do you have any idea? Am I right? 19 1 1 1 10 6 4 100 60 12 1000 840 32 10000 7560 64 100000 83160 128 1000000 720720 240 10000000 8648640 448 100000000 73513440 768 1000000000 735134400 1344 10000000000 6983776800 2304 100000000000 97772875200 4032 1000000000000 963761198400 6720 10000000000000 9316358251200 10752 100000000000000 97821761637600 17280 1000000000000000 866421317361600 26880 10000000000000000 8086598962041600 41472 100000000000000000 74801040398884800 64512 1000000000000000000 856811873911587456 491520 Timur_Bekibaev Re: test17 [2] // Problem 1748. The Most Complex Number 31 Jan 2010 20:54 No, for 10^18 correct answer is 897612484786617600 103680 Valentin (Perm SU) Re: test17 [1] // Problem 1748. The Most Complex Number 20 Oct 2011 13:22 Big thanks! :) Petru Trimbitas Re: test17 // Problem 1748. The Most Complex Number 7 Feb 2013 04:11 Try using unsigned long long and compute the numbers untill 10^19 [SPb NRU ITMO] Niyaz Nigmatullin Is there linear time algorithm which solves the problem? // Problem 1635. Mnemonics and Palindromes 7 Feb 2013 01:35 freelife Test 25? Help please. // Problem 1931. Excellent Team 7 Feb 2013 01:29 I can't understand what's wrong? #include <iostream> using namespace std; int main() { int n,s=1,max,j,i; cin>>n; int *a=new int[n]; for(i=0; i<n;i++) cin>>a[i]; s=1;max=0; for(i=0;i<n;i++) { j=i+1; while(a[i]<a[j]) j++; if (j-i>=s) { if (max>0) s=j-i+1; else s=j-i; max=i; } }; cout<<max+1; delete a; return 0; } Edited by author 07.02.2013 01:30 mariam kupatadze it is very easy [3] // Problem 1502. Domino Dots 27 Apr 2008 17:46 In paskal when n=10000 you can not write this expression n*(n+1)*(n+2)/2 in some variables it is very long and big number so in C++ it is very easy just write(here is my AC program): #include <cstdlib> #include <iostream> using namespace std; int main(int argc, char *argv[]) { long long n; cin>>n; cout<<n*(n+1)*(n+2)/2<<endl; system("PAUSE"); return EXIT_SUCCESS; } Edited by author 27.04.2008 17:47 Vedernikoff Sergey Re: it is very easy // Problem 1502. Domino Dots 29 Apr 2008 03:23 In Pascal you can use Int64 bekmyrat Re: it is very easy // Problem 1502. Domino Dots 27 Jan 2013 00:00 I Don't Need Your Help! BORODA Re: it is very easy // Problem 1502. Domino Dots 6 Feb 2013 22:17 why is it true? can u explain me please?) catalin_oancea TLE 9 [5] // Problem 1732. Ministry of Truth 9 Apr 2011 20:53 I use KMP algorithm but i've got TLE at #9 my code is: [code deleted] what can I improve? How did you solve-it? Edited by author 09.04.2011 20:54 bsu.mmf.team Re: TLE 9 [1] // Problem 1732. Ministry of Truth 11 Apr 2011 03:21 You don't need KMP in this task. I can't even image how this algo helps to solve it. The solution is much more simple. Just find the least position for every word. I got AC even with std::string and the function str.find() catalin_oancea Re: TLE 9 // Problem 1732. Ministry of Truth 12 Apr 2011 21:46 Can you give me an example? How to use str.find() in c++? My email adress is catalin_oancea2008@yahoo.com Edited by author 12.04.2011 21:46 Zhandos WA 9 [2] // Problem 1732. Ministry of Truth 13 Apr 2011 12:17 I have Wa 9. Can anybody help me ? catalin_oancea Re: WA 9 [1] // Problem 1732. Ministry of Truth 13 Apr 2011 19:50 try this: in: =========================== hhahaphapphappyhappyhh hap happ hh out: =========================== ___hap____happ______hh inatial_D Re: WA 9 // Problem 1732. Ministry of Truth 6 Feb 2013 20:57 this test helps me to find a bug. thanks. Nguyen Khac Tung WA#5 Could not find mistake with my code [2] // Problem 1410. Crack 27 Mar 2012 19:57 Var ch:Char; S:Array[-1..200000] of Longint; tmp:String; n,i,j,p,q,k,maxx:Longint; Function max(x,y:Longint):Longint; Begin If x>y then max:=x else max:=y; End; Begin tmp:=''; s[0]:=0; While not eof do Begin Read(ch); If ((ch in ['a'..'z']) or (ch in ['A'..'Z'])) then tmp:=tmp+ch Else If length(tmp)>0 then Begin inc(n); p:=length(tmp); If (n<3) then s[n]:=p Else s[n]:=max(s[n-2],s[n-3])+p; If s[n]>maxx then maxx:=s[n]; tmp:=''; End; End; If n=0 then Writeln(length(tmp)) Else Writeln(maxx); End. Please help. Tks nobik Re: WA#5 Could not find mistake with my code [1] // Problem 1410. Crack 19 Jun 2012 00:35 HI!!! In 5 test ENTER))) Try to paste '$' between two lines))) Good day))) Edited by author 19.06.2012 00:36 pswgoo Re: WA#5 Could not find mistake with my code // Problem 1410. Crack 6 Feb 2013 20:53 Thanks a lot,I got AC after looking your hint! Alias aka Alexander Prudaev can you please tell me answer for this test..(+) [2] // Problem 1677. Monkey at the Keyboard 13 Mar 2009 18:36 26 aaaaaaaaaaaaaaaaaaaaaaaaaaaa.... (30000 times char 'a') Al.Cash Re: can you please tell me answer for this test..(+) [1] // Problem 1677. Monkey at the Keyboard 13 Mar 2009 21:19 I can't tell it to you because it contains more then 40000 digits)) I think this fact could be used as a hint. bsu.mmf.team Re: can you please tell me answer for this test..(+) // Problem 1677. Monkey at the Keyboard 6 Feb 2013 17:36 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Was it so hard? =) pswgoo Just brute is OK! // Problem 1287. Mars Canals 6 Feb 2013 15:38 Iosif inf-10 How to read input data in Pascal? // Problem 1452. Pascal vs. C++ 6 Feb 2013 14:08 My prog got TLE on test 8 I found that on test 8 about 0.2 sec my program spend on reading input data. Here the part of code ( this part takes about 0.2 sec on test 8 - I checked it many times) ... Readln(N); for i:=1 to N do begin A[i].p:=i; Read(C); A[i].V:=C; end; ... Could you please explain how it should be done? Edited by author 06.02.2013 14:09 Edited by author 07.02.2013 01:22 Edited by author 07.02.2013 01:22 Shree Runtime Error Test 1 // Problem 1414. Astronomical Database 6 Feb 2013 13:04 Hi, I am getting runtime error on test 1 using C#. No reason is given in brackets. Any idea why this may be happening? Krayev Alexey (PSU) Did anybody have troubles with test#5 ? [18] // Problem 1492. Vasya's Dad 2 23 Oct 2006 23:23 Krayev Alexey (PSU) Re: Did anybody have troubles with test#5 ? [14] // Problem 1492. Vasya's Dad 2 24 Oct 2006 17:09 Consider test: 3 -15000 0 -14999 0 15000 1 is the output Yes -15000.000000 0.500000 -14999.000000 0.499983 14999.000000 0.499983 15000.000000 0.500000 -15000.000000 -0.500000 -14999.000000 -0.499983 14999.000000 0.499983 15000.000000 0.500000 correct ? I mean if we output only 4 digits it turns into Yes -15000.0000 0.5000 -14999.0000 0.5000 14999.0000 0.5000 15000.0000 0.5000 -15000.0000 -0.5000 -14999.0000 -0.5000 14999.0000 0.5000 15000.0000 0.5000 [Ural SU] GetTester Re: Did anybody have troubles with test#5 ? [10] // Problem 1492. Vasya's Dad 2 25 Oct 2006 13:19 Yes. Both outputs are correct. Vedernikoff Sergey Re: Did anybody have troubles with test#5 ? [9] // Problem 1492. Vasya's Dad 2 25 Oct 2006 14:29 Really mysterious test... I can't find error in my program too... Vedernikoff Sergey Re: Did anybody have troubles with test#5 ? [8] // Problem 1492. Vasya's Dad 2 25 Oct 2006 17:27 Oh! What's a bug! The following test helped me to fix it: Sample input: 7 -5 2 -4 1 -3 -1 -2 -4 -1 -6 0 -7 5 0 Sample output: Yes -5 1.0 -4 -0.2 -3 -1.9 -2 -4.1 -1 -5.8 0 -7.0 1 -5.8 2 -4.1 3 -1.9 4 -0.2 5 1.0 -5 1.0 -4 1.2 -3 0.9 -2 0.1 -1 -0.2 1 0.2 2 -0.1 3 -0.9 4 -1.2 5 -1.0 Krayev Alexey (PSU) Re: Did anybody have troubles with test#5 ? [7] // Problem 1492. Vasya's Dad 2 25 Oct 2006 23:29 My program passes this test but still wa5 svr Re: Did anybody have troubles with test#5 ? [6] // Problem 1492. Vasya's Dad 2 26 Oct 2006 00:24 Friens!. I had no problems with 1492 because used module of fracrion numbers(1274) or in other word used exact arithmetics. Dont use rouunding , epsilon but just exact type. Krayev Alexey (PSU) Re: Did anybody have troubles with test#5 ? [3] // Problem 1492. Vasya's Dad 2 26 Oct 2006 00:53 I use exact arithmetics. svr Re: Did anybody have troubles with test#5 ? [2] // Problem 1492. Vasya's Dad 2 26 Oct 2006 08:46 Then troubles owing to too complicated cod. Problem 1492 is for youngsters. Bounds 15000 are very small and may be worked with by using array F[30000] of fractions. For founding corner point x2 it may be used simplest idea of sliding triple (x-1,y1),(x,y2),(x+1,y) with checking y2*2==y1+y2 Vedernikoff Sergey Re: Did anybody have troubles with test#5 ? [1] // Problem 1492. Vasya's Dad 2 27 Oct 2006 15:54 I used real arithmetics, and got AC. My be, it is overflow when use exact arithmetics? In any case, problem can be accepted in both cases. Edited by author 22.06.2007 14:05 svr Re: Did anybody have troubles with test#5 ? // Problem 1492. Vasya's Dad 2 27 Oct 2006 17:05 In our case we form fraction value F(t)=y[i]+(t-x[i])*(y[i+1]-y[i])/(x[i+1]-x[i]) for t in [x[i];x[i+1]] and after that form F1[t]=(F[t]+F[-t])/2 and F2[t]=(F[t]-F[-t])/2 t in [x[0],-x[0]]. Denumenator and numenator dosn't more than 30000*30000= 900000000 . By using __int64 as fraction components we will in safety from overflow [Ural SU] GetTester Re: Did anybody have troubles with test#5 ? [1] // Problem 1492. Vasya's Dad 2 28 Oct 2006 23:26 It is not the truth. It is possible to do it without exact arithmetics. The author's decision works without it. svr Re: Did anybody have troubles with test#5 ? // Problem 1492. Vasya's Dad 2 29 Oct 2006 00:37 Wu mustn't repeat author solution. But when we use exact arithmetic we can formulate a problem as some statement on finite set and answer will definite and under control pperm Re: Did anybody have troubles with test#5 ? [2] // Problem 1492. Vasya's Dad 2 19 Aug 2007 23:58 I have trouble)) I use exact arithmetics and get AC. Me help test: 5 -3 4 -1 3 0 2 1 1 3 0 Yes -3.0000 2.0000 3.0000 2.0000 -3.0000 2.0000 -1.0000 1.0000 1.0000 -1.0000 3.0000 -2.0000 Denis Koshman Re: Did anybody have troubles with test#5 ? [1] // Problem 1492. Vasya's Dad 2 19 Aug 2008 19:28 Thanks, helped me to find a bug :) I wrote 0 if original function does not cross (0;0). Also I had some problems inside finding mid-point, including X=0 case. Edited by author 19.08.2008 19:46 bsu.mmf.team Re: Did anybody have troubles with test#5 ? // Problem 1492. Vasya's Dad 2 5 Feb 2013 20:24 Solved without exact arithmetic or eps. Just replace all divisions by multiplications :) Edited by author 05.02.2013 20:25 Azrail Re: Did anybody have troubles with test#5 ? [2] // Problem 1492. Vasya's Dad 2 28 Dec 2006 12:31 I used cpp double and eps=1e-9 and got WA5. When i changed eps to 1e-6 i got AC. Maybe it'll helps you. xiaomengxian Re: Did anybody have troubles with test#5 ? [1] // Problem 1492. Vasya's Dad 2 21 Apr 2007 07:28 I used pascal extended and eps=1e-6 and got WA 12. When I changed eps to 1e-9 I got AC... How strange... AlexF [USTU] Re: Did anybody have troubles with test#5 ? // Problem 1492. Vasya's Dad 2 14 Jun 2007 23:21 My eps in cpp double is 1e-9 - AC cap_prot WA on test #1. Are tests correct? // Problem 1137. Bus Routes 5 Feb 2013 16:12 I have WA #1 Seems that test #1 is a test from statement. For this test my program outputs: 15 2 4 7 4 1 4 5 6 3 2 5 7 5 2 1 2\n And this is correct eulerian tour. And output in statement is different: 15 2 5 4 2 3 6 5 7 4 1 2 1 4 7 5 2\n May be the solution validator is wrong? Could somebody help, please. Aguero why this problem has rating 393?? // Problem 1602. Elevator 5 Feb 2013 01:45 I think that this problem should be 200.. sry my english is so bad George Skhirtladze What is wrong?ADMINS?Why WA on test #6 [1] // Problem 1493. One Step from Happiness 12 Apr 2010 17:04 var a:array[1..6]of integer; i:integer; g:char; s:string; begin read(s); for i:=1 to 6 do val(s[i],a[i],g); if (a[6]<>9) and ((a[1]+a[2]+a[3]=a[4]+a[5]+a[6]+1)or (a[1]+a[2]+a[3]=a[4]+a[5]+a[6]-1))then writeln('Yes') else writeln('No'); end. HM2P33 Re: What is wrong?ADMINS?Why WA on test #6 // Problem 1493. One Step from Happiness 5 Feb 2013 00:07 try this case: 550009 answer should be "No" HM2P33 Here's my AC // Problem 1327. Fuses 4 Feb 2013 22:20 #include <iostream> using namespace std; int main(void){ int a,b,res; cin>>a>>b; res = (b-a +1)/ 2; if((b-a +1)&1 and b&1) res++; cout<<res<<endl; return 0; } BlackShark ??????? [1] // Problem 1639. Chocolate 2 6 Mar 2009 20:03 I dont understand why the number of moves is constant. How to prove it?? HM2P33 Re: ??????? // Problem 1639. Chocolate 2 4 Feb 2013 09:23 think in this way, each time a player makes a move, the number of chocolate pieces increases in one (first there is one piece, then two, then three and so on). But the game stop when there are n*m pieces, so there must've been n*m-1 moves. Bekzhan It's magic! [1] // Problem 1316. Electronic Auction 31 Jan 2013 21:47 My solution, which didn't pass stress-test, get AC! Your_Y Re: It's magic! // Problem 1316. Electronic Auction 3 Feb 2013 07:47 BUG!!! 737363395 Who can tell me the meaning of the 'test#'? 3 Feb 2013 07:47 What does it mean? 737363395 Who can tell me how to solve the problem 1220 3 Feb 2013 07:46 Why its Memory limit always exceeded?
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