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有时候快排/归并之类并不简简单单只是排序，比如快排可以求第k大，归并在部分已排序的情况下效率较高不容易被卡~ #include <bits/stdc++.h> using namespace std; void merge(int a[], int l, int r, int mid) { int 阅读全文
posted @ 2020-03-29 20:06
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Vova had a pretty weird sleeping schedule. There are hh hours in a day. Vova will sleep exactly nn times. The ii -th time he will sleep exactly after 阅读全文
posted @ 2020-03-29 00:54
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The next lecture in a high school requires two topics to be discussed. The ii -th topic is interesting by aiai units for the teacher and by bibi units 阅读全文
posted @ 2020-03-29 00:42
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There is a frog staying to the left of the string s=s1s2…sns=s1s2…sn consisting of nn characters (to be more precise, the frog initially stays at the 阅读全文
posted @ 2020-03-29 00:35
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Problem Statement Snuke has decided to play a game using cards. He has a deck consisting of NN cards. On the ii -th card from the top, an integer AiAi 阅读全文
posted @ 2020-03-29 00:30
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