题目链接:http://codeforces.com/problemset/problem/558/C 题意:把n个数变成相同所需要走的最小的步数易得到结论,两个奇数不同,一直×2不可能有重叠枚举每个数可能到得所有值,以及统计达到该值的时候已经走的步数最终答案就是1到up中num[i]最小的数 Examples input output 2 input output 5 Note In the first sample test, the optimal solution . In the se…

Codeforces 558C 题意:给n个数字,对每一个数字能够进行两种操作:num*2与num/2(向下取整),求:让n个数相等最少须要操作多少次. 分析: 计算每一个数的二进制公共前缀. 枚举法亦可. /* *Author : Flint_x *Created Time : 2015-07-22 12:33:11 *File name : whust2_L.cpp */ #include<iostream> #include<sstream> #include<fstr…

链接:http://codeforces.com/problemset/problem/558/C C. Amr and Chemistry time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Amr loves Chemistry, and specially doing experiments. He is preparing…

time limit per test1 second memory limit per test256 megabytes inputstandard input outputstandard output Amr loves Chemistry, and specially doing experiments. He is preparing for a new interesting experiment. Amr has n different types of chemicals. E…

题目链接: C. Amr and Chemistry time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Amr loves Chemistry, and specially doing experiments. He is preparing for a new interesting experiment. Amr has n …

Magic Forest 题意:就是在1 ~ n中找三个值,满足三角形的要求,同时三个数的异或运算还要为0: , where  denotes the bitwise xor of integers x and y. 我已开始没想到a^b^c=0相当于c = a^b; 这样的转化就可以是三次的变成二次的: #include <cstdio> #include <algorithm> #include <iostream> using namespace std; ];…

C. Amr and Chemistry Problem's Link: http://codeforces.com/problemset/problem/558/C Mean: 给出n个数,让你通过下面两种操作,把它们转换为同一个数.求最少的操作数. 1.ai = ai*2 2.ai = ai/2 (向下取整) analyse: 基本思路:首先枚举出每个数能够到达的数字并且记录下到达该数组需要的步数,然后从到达次数为n次的数字中选择步数最小的即为答案. 对于一个数字Ai,它可以变换得到的数字可…

C. Amr and Chemistry Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/558/problem/C Description Amr loves Chemistry, and specially doing experiments. He is preparing for a new interesting experiment. Amr has n different type…

Amr loves Chemistry, and specially doing experiments. He is preparing for a new interesting experiment. Amr has n different types of chemicals. Each chemical i has an initial volume of ai liters. For this experiment, Amr has to mix all the chemicals…

点击打开链接 Amr and Chemistry time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Amr loves Chemistry, and specially doing experiments. He is preparing for a new interesting experiment. Amr has n di…