19 lines
731 B
Text
19 lines
731 B
Text
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---
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id: io-speed
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title: Input / Output Speed
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author: ?
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description: ""
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---
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(actually figure out what makes a dif on USACO lol)
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## C++
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(using scanf, printf instead?)
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(not using endl?)
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Including `ios_base::sync_with_stdio(0); cin.tie(0);` in the main function can speed up input & output significantly on some tasks. See [here](https://codeforces.com/blog/entry/5217) and [StackOverflow](https://stackoverflow.com/questions/31162367/significance-of-ios-basesync-with-stdiofalse-cin-tienull) for more information.
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- Actually, the former link says that it is supposedly prohibited to use `freopen` to redirect `cin` and `cout` if `ios_base::sync_with_stdio(0); cin.tie(0);` is included, but it works properly as far as I know.
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