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>…

D. Array Restoration 这题想一下就会发现是只要两个相同的数之间没有比它小的就可以,就是保存一下数第一次出现和最后一次出现的位置,然后查询一下这个区间就可以,如果有0的话就进行填充. 这个题我是用RMQ(ST)进行查询的,在初始化的时候,如果有0就把0变成2e5+1,因为数据最大2e5,然后区间查询就可以了,关于RMQ(ST),以前写过博客,有兴趣的可以看一下 RMQ(ST)详解 这个题坑点很多,首先如果这个序列一开始的最大值比m小,并且没有0,那么就是NO,有0就先把一个0变…

C. Bracket Subsequence ... 代码: 1 //C 2 #include<iostream> 3 #include<cstdio> 4 #include<cstring> 5 #include<algorithm> 6 #include<bitset> 7 #include<cassert> 8 #include<cctype> 9 #include<cmath> 10 #include&…

B. Pair of Toys 智障题目(嘤嘤嘤~) 代码: 1 //B 2 #include<iostream> 3 #include<cstdio> 4 #include<cstring> 5 #include<algorithm> 6 #include<bitset> 7 #include<cassert> 8 #include<cctype> 9 #include<cmath> 10 #include&…

题意:给定两个串s与t,其中s可能有至多一个通配符*可以被当做任意长度与内容的串,问t能否与s匹配 n,m<=2e5 思路: #include<cstdio> #include<cstring> #include<string> #include<cmath> #include<iostream> #include<algorithm> #include<map> #include<set> #inclu…

#include<iostream> #include<algorithm> #include<stdio.h> #include<string.h> using namespace std; ]; ]; int main() { int n,m; int lena; int lenb; while(~scanf("%d%d",&n,&m)) { scanf("%s",a); scanf("%…

http://codeforces.com/contest/1023/problem/E 交互题 #include <cstdio> #include <cstdlib> #include <cmath> #include <cstring> #include <time.h> #include <string> #include <set> #include <map> #include <list&g…

B. Weakened Common Divisor time limit per test 1.5 seconds memory limit per test 256 megabytes input standard input output standard output During the research on properties of the greatest common divisor (GCD) of a set of numbers, Ildar, a famous mat…

http://codeforces.com/contest/948/problem/A   A. Protect Sheep Bob is a farmer. He has a large pasture with many sheep. Recently, he has lost some of them due to wolf attacks. He thus decided to place some shepherd dogs in such a way that all his she…

A : A. Doggo Recoloring time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Panic is rising in the committee for doggo standardization — the puppies of the new brood have been born multi-colore…