Same code got TLE in GNU C++11 and got AC in GNU C++17. Can someone please tell me the reason behind it?
TLE (C++11): http://codeforces.com/contest/1520/submission/115347126
AC (C++17): http://codeforces.com/contest/1520/submission/115347176
Thanks!
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Same code got TLE in GNU C++11 and got AC in GNU C++17. Can someone please tell me the reason behind it?
TLE (C++11): http://codeforces.com/contest/1520/submission/115347126
AC (C++17): http://codeforces.com/contest/1520/submission/115347176
Thanks!
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Running the same code in custom invocation and printing
v.size()
gives81
in C++17 and9090927
in C++11, so you're iterating over significantly more values when submitting under C++11 per test case. As for why, there appears to be a difference in the implementation ofpow
, ask
takes on the values1, 11, 111
in C++17 and1, 11, 110
in C++11. Not sure why that happens though, I think the actual implementation ofpow
is architecture dependent. In my opinion, it's easier to just not involve floating point computation if possible.