突然发现五天没记录了,这五天学习完全没有按着正常规划进行,先罗列一下吧. 机器学习视频第一周的全部看完了. 算法导论看了几页. 参加了一次CF.rating只加了20,看来提高实力才是最关键的. C++找到了侯捷老师的视频. 貌似记不得什么了. 记录一下昨天的CF题解吧. 题目链接:http://codeforces.com/contest/1088 A题:理论上可以用暴力搜,但是除一之外所有的答案都可以写成"x x",不再写代码解释. B题:题意为数组中的每一个数每次都减去一个最小的…

蒟蒻就切了四道水题,然后EF看着可写然而并不会,中间还WA了一次,我太菜了.jpg =.= A.Vasya And Password 一开始看着有点虚没敢立刻写,后来写完第二题发现可以暴力讨论,因为保证有解,没了 #include<cstdio> #include<cstring> #include<algorithm> using namespace std; ; char rd[N]; int main () { int T; scanf("%d"…

Codeforces Round #504 (rated, Div. 1 + Div. 2, based on VK Cup 2018 Final) A. Single Wildcard Pattern Matching 题意就是匹配字符的题目,打比赛的时候没有看到只有一个" * ",然后就写挫了,被hack了,被hack的点就是判一下只有一个" * ". 代码: //A #include<iostream> #include<cstdio>…

Codeforces Round #525 (Div. 2) 哎,忍不住想吐槽一下,又要准备训练,又要做些无聊的事,弄得我都想退出了. 好好的训练不好么???? 只能做出两道水题,其实C题,感觉做出来了,差几分钟,不能提交了,明天交一发试试吧. 题目一览表 来源 考察知识点 完成时间 A Ehab and another construction problem cf 签到?? 2018.12.4 B Ehab and subtraction cf 签到?? 2018.12.4 C Ehab a…

Codeforces Round #523 (Div. 2) 题目一览表 来源 考察知识点 完成时间 A Coins cf 贪心(签到题) 2018.11.23 B Views Matter cf 思维??? 2018.11.24 C Multiplicity cf dp 2018.11.27 D TV Shows cf 贪心+multiset 2018.12.2…

A. Watching a movie time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output You have decided to watch the best moments of some movie. There are two buttons on your player: Watch the current minute…

CF469 Codeforces Round #268 (Div. 2) http://codeforces.com/contest/469 开学了,时间少,水题就不写题解了,不水的题也不写这么详细了. A 水题 //#pragma comment(linker, "/STACK:102400000,102400000") #include<cstdio> #include<cmath> #include<iostream> #include<…

Codeforces Round #270 1001 A. Design Tutorial: Learn from Math time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output One way to create a task is to learn from math. You can generate some random m…

A. Sereja and Dima time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Sereja and Dima play a game. The rules of the game are very simple. The players have n cards in a row. Each card contains…

Pythagorean Triples 题目链接: http://codeforces.com/contest/707/problem/C Description Katya studies in a fifth grade. Recently her class studied right triangles and the Pythagorean theorem. It appeared, that there are triples of positive integers such th…