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Advanced CPU Manufacturer (ACM) is one of the best CPU manufacturer in the world. Every day, they manufacture n CPU chips and sell them all over the w 阅读全文
posted @ 2020-03-30 20:11
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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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题目背景 BBB地区在地震过后，所有村庄都造成了一定的损毁，而这场地震却没对公路造成什么影响。但是在村庄重建好之前，所有与未重建完成的村庄的公路均无法通车。换句话说，只有连接着两个重建完成的村庄的公路才能通车，只能到达重建完成的村庄。 题目描述 给出BBB地区的村庄数NNN，村庄编号从000到N−1 阅读全文
posted @ 2020-03-28 18:55
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The round carousel consists of nn figures of animals. Figures are numbered from 11 to nn in order of the carousel moving. Thus, after the nn -th figur 阅读全文
posted @ 2020-03-27 23:56
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A number is ternary if it contains only digits 00 , 11 and 22 . For example, the following numbers are ternary: 10221022 , 1111 , 2121 , 20022002 . Yo 阅读全文
posted @ 2020-03-27 08:45
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For the given integer nn (n>2n>2 ) let's write down all the strings of length nn which contain n−2n−2 letters 'a' and two letters 'b' in lexicographic 阅读全文
posted @ 2020-03-27 08:33
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