You are given three integers aa, bb and xx. Your task is to construct a binary string ssof length n=a+bn=a+b such that there are exactly aa zeroes, exactly bb ones and exactly xx indices ii (where 1≤i<n1≤i<n) such that si≠si+1si≠si+1. It is guarante…

You are given three integers a, b and x. Your task is to construct a binary string s of length n=a+b such that there are exactly a zeroes, exactly b ones and exactly x indices i (where 1≤i<n) such that si≠si+1. It is guaranteed that the answer always…

这道题目的意思就是排两排书,下面这排只能竖着放,上面这排可以平着放,使得宽度最小 根据题意可以得出一个结论,放上这排书的Width 肯定会遵照从小到大的顺序放上去的 Because the total thickness of vertical books is fixed it's good to calculate the minimum possible total width of horizontal books. 那么只需要模拟一遍放书的过程即可,不会TLE 不过正统解法是Dp Dp…

题意 : 给出一颗无限层的满二叉树,然后每个值为 X (根的 X 等于 1 ) 左孩子的值是 2*X,右孩子的值是 2*X+1 ,现在有两种操作,(1, x,k) 表示将 x 所在层的所有节点整体向右循环地移动 k 个单位.(2,x,k)表示将 x 所在的层的所有节点及其子树向右循环地移动 k 个单位.(3,x)输出从 x 到根的路径 分析 : 第一个操作不难进行模拟 只要给每个层记录其偏移量,最后查询的时候依据偏移量来输出具体的值即可 关键是第二个操作 仔细一想,会发现一个规律 如果第一层移动…

题目链接:String Similarity 题意: 首先题目定义了两个串的相似(串的构成是0.1),如果两个串存在对于一个下标k,它们的值一样,那么这两个串就相似 然后题目给你一个长度为2n-1的串,我们设下标从1开始,那么[1,n],[2,n+1],[3,n+2]...[n,2n-1]每一个都是一个长度为n的串,你需要找出来长度为n的串,使得这个串和[1,n],[2,n+1],[3,n+2]...[n,2n-1]这些串都相似 题解: 你会发现,只需要输出原长度为2n-1串的下标1,3,5,7…

E - Vasya and Binary String 思路:区间dp + 记忆化搜索 转移方程看上一篇博客. 代码: #pragma GCC optimize(2) #pragma GCC optimize(3) #pragma GCC optimize(4) #include<bits/stdc++.h> using namespace std; #define fi first #define se second #define y1 y11 #define pi acos(-1.0)…

题目链接:Mahmoud and Ehab and the binary string 题意: 一道交互题,首先给出一个字符串的长度l.现在让你进行提问(最多15次),每次提问提出一个字符串,会返回这个字符串与目标串之间不同的字符的个数.要在15次的提问内,找到目标串中任意一个1和0的位置. 题解: 因为是15次提问,其实可以想到二分,但是分别对0和1进行二分差不多要二十多次,所以可以对01或10进行二分,查找某一个01或10串的位置. #include<bits/stdc++.h> usin…

D. Binary String Minimizing You are given a binary string of length n (i. e. a string consisting of n characters '0' and '1'). In one move you can swap two adjacent characters of the string. What is the lexicographically minimum possible string you c…

D2. Kirk and a Binary String (hard version) time limit per test1 second memory limit per test256 megabytes inputstandard input outputstandard output The only difference between easy and hard versions is the length of the string. You can hack this pro…

You are given a binary string of length nn (i. e. a string consisting of nn characters '0' and '1'). In one move you can swap two adjacent characters of the string. What is the lexicographically minimum possible string you can obtain from the given o…

问题 B: Binary String Matching 时间限制: 3 Sec  内存限制: 128 MB提交: 4  解决: 2[提交][状态][讨论版] 题目描述 Given two strings A and B, whose alphabet consist only ‘0’ and ‘1’. Your task is only to tell how many times does A appear as a substring of B? For example, the text…

Binary String Matching 时间限制:3000 ms  |  内存限制:65535 KB 难度:3 描述     Given two strings A and B, whose alphabet consist only ‘0’ and ‘1’. Your task is only to tell how many times does A appear as a substring of B? For example, the text string B is ‘10011…

Binary String Matching 时间限制:3000 ms  |  内存限制:65535 KB 难度:3   描述 Given two strings A and B, whose alphabet consist only ‘0’ and ‘1’. Your task is only to tell how many times does A appear as a substring of B? For example, the text string B is ‘1001110…

Binary String Matching 时间限制:3000 ms  |  内存限制:65535 KB 难度:3   描述 Given two strings A and B, whose alphabet consist only ‘0’ and ‘1’. Your task is only to tell how many times does A appear as a substring of B? For example, the text string B is ‘1001110…

use JSON qw/encode_json decode_json/ ; use Encode; my $data = [ { 'name' => 'Ken' , 'age' => 19 }, { 'name' => '测试' , 'age' => 25 } ]; print encode_utf8("'name' => '测试'"); print "\n"; my $json_out = encode_json ( $data )…

encode_json $json_text = encode_json $perl_scalar Converts the given Perl data structure to a UTF-8 encoded, binary string. This function call is functionally identical to: $json_text = JSON->new->utf8->encode($perl_scalar) 转换给定的perl数据结构到一个UTF-8编…

Binary String Matching 时间限制:3000 ms  |  内存限制:65535 KB 难度:3   描述 Given two strings A and B, whose alphabet consist only ‘0’ and ‘1’. Your task is only to tell how many times does A appear as a substring of B? For example, the text string B is ‘1001110…

Special binary strings are binary strings with the following two properties: The number of 0's is equal to the number of 1's. Every prefix of the binary string has at least as many 1's as 0's. Given a special string S, a move consists of choosing two…

Problem   Codeforces #541 (Div2) - E. String Multiplication Time Limit: 2000 mSec Problem Description Input Output Print exactly one integer — the beauty of the product of the strings. Sample Input 3aba Sample Output 3 题解:这个题的思维难度其实不大,需要维护什么东西很容易想到,或…

Special binary strings are binary strings with the following two properties: The number of 0's is equal to the number of 1's. Every prefix of the binary string has at least as many 1's as 0's. Given a special string S, a move consists of choosing two…

Given a binary string S (a string consisting only of '0' and '1's) and a positive integer N, return true if and only if for every integer X from 1 to N, the binary representation of X is a substring of S. Example 1: Input: S = "0110", N = 3 Outp…

https://leetcode.com/problems/binary-string-with-substrings-representing-1-to-n/ Given a binary string S (a string consisting only of '0' and '1's) and a positive integer N, return true if and only if for every integer X from 1 to N, the binary repre…

Special binary strings are binary strings with the following two properties: The number of 0's is equal to the number of 1's. Every prefix of the binary string has at least as many 1's as 0's. Given a special string S, a move consists of choosing two…

How to convert a byte to its binary string representation For example, the bits in a byte B are 10000010, how can I assign the bits to the string strliterally, that is, str = "10000010". ; String s1 = String.format('); System. ; String s2 = Stri…

E. Vasya and Binary String 链接 分析: 对于长度为x的一段序列,我们可以dp出消除的过程的最优方案,背包即可. 然后区间dp,可以先合并完所有的点,即没相同的一段区间合并为一个点.设f[i][j][k]表示消完区间[i,j]和这段区间后面k个元素最大值,其中k个元素的颜色与点j的颜色相同. 转移:可以首先将j和后面k个元素消除,然后消除[i,j-1].也可以枚举一个和j颜色相同的点m,然后分别先消除[m+1,r-1],剩下的区间就和后面k个连在一起了,再求出这段区间的…

Binary String Matching 时间限制:3000 ms  |  内存限制:65535 KB 难度:3   描述 Given two strings A and B, whose alphabet consist only ‘0’ and ‘1’. Your task is only to tell how many times does A appear as a substring of B? For example, the text string B is ‘1001110…

Binary String Matching 时间限制:3000 ms  |  内存限制:65535 KB 难度:3   描述 Given two strings A and B, whose alphabet consist only ‘0’ and ‘1’. Your task is only to tell how many times does A appear as a substring of B? For example, the text string B is ‘1001110…

Codeforces1107E 记忆化dp E. Vasya and Binary String Description: Vasya has a string \(s\) of length \(n\) consisting only of digits 0 and 1. Also he has an array \(a\) of length \(n\). Vasya performs the following operation until the string becomes empt…

Binary String Matching 时间限制:3000 ms  |  内存限制:65535 KB 难度:3  描述:Given two strings A and B, whose alphabet consist only ‘0’ and ‘1’. Your task is only to tell how many times does A appear as a substring of B? For             example, the text string B…

Binary String Matching 时间限制:3000 ms  |  内存限制:65535 KB 难度:3   描述 Given two strings A and B, whose alphabet consist only ‘0’ and ‘1’. Your task is only to tell how many times does A appear as a substring of B? For example, the text string B is ‘1001110…