Number Transformation II 题解: 对于操作2来说, a - a % x[i] 就会到左边离a最近的x[i]的倍数. 也就是说 [ k * x[i] + 1, (k+1)* x[i] -1 ]这段区间的的数都会走到 k * x[i]上. 所以对于每个位置都先计算出他到右边最远的覆盖位置. 然后在反着求出每个位置能往左走走到的最远的位置. 代码: #include<bits/stdc++.h> using namespace std; #define Fopen freo…
C. Number Transformation II time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output You are given a sequence of positive integers x1, x2, ..., xn and two non-negative integers a and b. Your task is…
Number Transformation 我们能发现这个东西是以2 - k的lcm作为一个循环节, 然后bfs就好啦. #include<bits/stdc++.h> #define LL long long #define fi first #define se second #define mk make_pair #define PLL pair<LL, LL> #define PLI pair<LL, int> #define PII pair<int,…
1 题目描述: 被给一系列的正整数x1,x2,x3...xn和两个非负整数a和b,通过下面两步操作将a转化为b: 1.对当前的a减1. 2.对当前a减去a % xi (i=1,2...n). 计算a转化到b最小需要的最短步数. 2 输入 第一行包含简单的整数n(1 ≤ n ≤ 10^5),第二行包含n个用空格分开的整数x1,x2,x3...xn(2 ≤ xi ≤ 10^9),第三行包含两个整数a和b(0 ≤ b ≤ a ≤ 10^9, a - b ≤ 10^6). 3 输出 输出一个整数…
题意及思路:https://blog.csdn.net/bossup/article/details/37076965 代码: #include <bits/stdc++.h> #define LL long long #define INF 1e18 using namespace std; int lcm(int x, int y) { return x * y / __gcd(x, y); } const int maxn = 500010; LL a, b, k; LL dp[maxn…
2014多校 第八题 1008 2014 Multi-University Training Contest 8 4952 Number Transformation Number Transformation Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 85 Accepted Submission(s): 31 Problem Descr…
Single Number: 1. Given an array of integers, every element appears twice except for one. Find that single one. Note:Your algorithm should have a linear runtime complexity. Could you implement it without using extra memory? 代码: class Solution { publi…
3858: Number Transformation Time Limit: 1 Sec Memory Limit: 64 MBSubmit: 82 Solved: 41[Submit][Status] Description Teacher Mai has an integer x. He does the following operations k times. In the i-th operation, x becomes the least integer no less th…
http://acm.hdu.edu.cn/showproblem.php?pid=4952 Number Transformation Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 171 Accepted Submission(s): 69 Problem Description Teacher Mai has an inte…
Number Transformation In this problem, you are given an integer number s. You can transform any integer number A to another integer number B by adding x to A. This x is an integer number which is a prime factor of A (please note that 1 and A are not…
点击打开链接 C. Palindrome Transformation time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Nam is playing with a string on his computer. The string consists of n lowercase English letters. It is m…
Time Limit:1000MS Memory Limit:262144KB 64bit IO Format:%I64d & %I64u Description You are given a sequence of positive integers x1, x2, ..., xn and two non-negative integers a and b. Your task is to transform a into b. To do that, you can per…
B. z-sort 题目连接: http://www.codeforces.com/contest/652/problem/B Description A student of z-school found a kind of sorting called z-sort. The array a with n elements are z-sorted if two conditions hold: ai ≥ ai - 1 for all even i, ai ≤ ai - 1 for all…
[1]LeetCode 136 Single Number 题意:奇数个数,其中除了一个数只出现一次外,其他数都是成对出现,比如1,2,2,3,3...,求出该单个数. 解法:容易想到异或的性质,两个相同的数异或为0,那么把这串数从头到尾异或起来,最后的数就是要求的那个数. 代码如下: class Solution { public: int singleNumber(vector<int>& nums) { ; ;i<nums.size();i++) sum ^= nums[i…
Single Number I : Given an array of integers, every element appears twice except for one. Find that single one. Note: Your algorithm should have a linear runtime complexity. Could you implement it without using extra memory? Solution: 解法不少,贴一种: class…
http://www.codeforces.com/gym/100827/attachments Hill Number Time Limits: 5000 MS Memory Limits: 200000 KB 64-bit interger IO format: %lld Java class name: Main Description A Hill Number is a number whose digits possibly rise and then possibl…
Given an array of integers, every element appears twice except for one. Find that single one. 本题利用XOR的特性, X^0 = X, X^X = 0, 并且XOR满足交换律. class Solution(object): def singleNumber(self, nums): """ :type nums: List[int] :rtype: int ""…
I title: Given an array of integers, every element appears twice except for one. Find that single one. Note:Your algorithm should have a linear runtime complexity. Could you implement it without using extra memory? 思路:异或 class Solution { public: int…
Description In this problem, you are given a pair of integers A and B. You can transform any integer number A to B by adding x to A.This x is an integer number which is a prime below A.Now,your task is to find the minimum number of transformation req…
Problem statement Elementary knowledge: There is a popular question when I seeked my job at Beijing: swap the value of two numbers without allocate a new memory. Normally, there are two solutions: 1 int main(){ 2 int a = 3; 3 int b = 5; 4 5 a += b; 6…
109. Magic of David Copperfield II time limit per test: 0.25 sec. memory limit per test: 4096 KB The well-known magician David Copperfield loves lo show the following trick: a square with N rows and N columns of different pictures appears on a TV scr…
