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Hamroz_JONN's blog

Cin/Cout w/o Sync is much slower than Scanf/Printf
By Hamroz_JONN, history, 2 years ago, In English

First submission with Cin/Cout w/o Sync: 185094688, 3915 ms

Second one with Scanf/Printf: 185094426, 1357 ms

Shouldn't that be exactly the opposite ?

Because almost everywhere its mentioned that Cin/Cout w/o Sync should be faster, or at least same speed as Scanf/Printf.

Why is it so ?

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2 years ago, # |
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cin.tie() doesn't do anything useful in your code(it returns a pointer to cout).

cin.tie(0) gives a massive speed increase as it means reading from cin doesn't flush cout.

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