Order of including headers seems to affect overall running time.
Difference between en1 and en2, changed 38 character(s)
I wrote two different codes, which differs only on order of headers.↵
Two codes are like these:↵
↵
1. ↵
↵
~~~~~↵
#include <stdio.h>↵
#include <algorithm>↵
....(blahblah)....↵
↵
2.~~~~~↵
↵
↵
2.↵
↵
~~~~~↵
↵
#include <algorithm>↵
#include <stdio.h>↵
....(blahblah)....↵
~~~~~↵
↵
↵
Note: At (blahblah) part, there are 9 millions scanf("%d", &t) operations.↵
Compilation options are both GNU C++14. (GNU C++14 6.2.0, which is used on Codeforces.)↵
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For my opinion, this two code should exactly do the same operations.↵
↵
But, 1st code gives 1.6ms / 2ms AC, and 2nd code gives TLE.↵
This issue is not about server status, it's still same during many submits.↵
↵
Can someone help me about what's going on here?

History

 
 
 
 
Revisions
 
 
  Rev. Lang. By When Δ Comment
en3 English dotorya 2017-04-04 17:51:30 47 Tiny change: 'g on here?' -> 'g on here?\n\nNote : It's not 1.6ms / 2ms, It's 1.6s / 2s'
en2 English dotorya 2017-04-04 17:36:25 38
en1 English dotorya 2017-04-04 17:35:40 726 Initial revision (published)