Royboy01's blog

help!
By Royboy01, history, 23 months ago, In English

Can someone tell me why my solution got tle. As par I know deque takes O(1) for insertion and deletion from front and back.

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23 months ago, # |
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Removed cerr and got AC: https://codeforces.net/contest/1419/submission/184576812

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    23 months ago, # ^ |
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    Thanks. But why it happened? Also should I use cerr further?

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      23 months ago, # ^ |
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      Because cerr is slow, use it only when you write small amount of data.

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