OneStone's blog

By OneStone, history, 6 years ago, In English

At the end of the contest, my submission for this problem gave me a runtime error on case 19. This program solved larger cases of this problem but apparently not this one. Does anyone know why this happened? Here is the submission

 
 
 
 
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6 years ago, # |
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Your sorting function is causing the RE. Write "return(a.money<b.money);" inside it instead. Got AC: http://codeforces.com/contest/580/submission/13172132

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    6 years ago, # ^ |
    Rev. 2   Vote: I like it +7 Vote: I do not like it

    To further exaplain, imagine you have three friends all with 5 money, X,Y and Z. Your function would say that X>Y, Y>Z, and Z>X. This will mean that the sort will keep sorting on and on forever, trying to get it right, but it never will because X can be greater or smaller than Y depending if it is the a parameter or b parameter.

    If you set n=d=1000 and v[i].money=v[i].friendship=123 it will throw the exception.