Answer is YES
1 and 3 move in same direction
2 segment move in other direction
@vijju123 Hey , our Team secured a rank around 650 in this online round in AMRITAPURI Region and we are first in our college who filled for AMRITAPURI .
What are the chances of us getting selected for the onsite round ?
PS: We did the fourth one but were failed to solve the third one cause of a stupid mistake 
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Filling first or last doesn’t matter, Only thing that matter is the ranklist whether u r on top of it or not in your college.
The contest was quite balanced one and I loved to solve the problems.
Kudos to the setters 
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Though I’m still not sure whether SUMOR is solvable with given constraints.
The thing that I hate the most is 20 min high penalty time 
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agreed… the penalty messed up my rank too 
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When I tried to submit the first problem, generally I have a habit of submitting code as a file, so when I submitted code using file method it gave me wrong answer verdict, and when I saw my submitted code it was an empty file, basically open file button was not working, because of this I got 20 min time penalty. I think my time penalty should be removed for the first problem. Please @admin look into this matter
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@sj444 we also faced the same problem of an empty file (a file with just the #include’s and empty main()) being submitted. I think it was because you submitted the file in IDE-mode. You have to switch to non-IDE mode and then submit it otherwise it was giving WA. @admin, please remove the penalty for this kind of wrong submission. Please discard any solutions which were submitted from IDE mode with opening a file (rather than writing the code in IDE) as it lead to submission of the default code which is present in the IDE instead of the file which we opened in IDE mode. Also, why can’t we import code into IDE by file method? PS: We submitted the codes for other problems by file method in non-IDE mode.
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What were the constraints for the first problem?
Can you please help me in this?
I actually solved exactly but unable to find the mistake.
Here is the link : ImHwvJ - Online C++0x Compiler & Debugging Tool - Ideone.com
in 3rd question i made a pair of pair of speed, left, right then sort it… then for every i am checking the three consecutive index if all three have same velocity then check whether all the three have atleast one point in common. if yes then print no and break. is this wrong?
In this case the maximum intersection of intervals will be 2 which is less than 3 so answer is yes , 1 and 3 can move in one direction and the second one in opposite direction.
checking for 3 consecutive ranges won’t work. You need to check all nC3 possibilities.
If you sort all the ranges before hand, then checking 3 consecutive will work.
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Make a graph among segments where edge if same velocity and overlap. Check if graph is bi partite then yes else no
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even after sorting the <speed, left range right range> pair.?
yeah exactly. that’s what i thought but that doesn’t seem to work out. do you happen to know any corner case?
What is the selection criteria of AMRITAPURI 2019 ?
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Try this:
Segments
4 7 1
5 9 1
8 11 1
Got a WA due to this corner case
You need to make sure 3 or more segments are overlapping pairwise as well
Our team solved 2 problems. Rank around 1400+ and we are first in our college.
Will we be selected? We are from Kharagpur region.
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