B. Obtain Two Zeroes time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output You are given two integers aa and bb. You may perform any number of operations on them (possibly zero). During each oper…

题目:包含两个零 题意:你被给予两个数a和b,你可以对这两个数进行操作 每次操作你可以选择任意的正整数x,可以进行a = a - x,b = b - 2x或者a = a - 2x,b = b - x两种操作 是否可以让两个整数同时变为0 输出"YES"或者"NO" 分析:可以把相同减去的第一种操作全都合并为x,第二种操作全都合并为y 可以得到a - x - 2 * y = 0,b - 2 * x - y = 0 通过这两个等式,可以得到(a + b) = 3 * x…

A. Heating (水题) 题目链接 大致思路: 因为是代价是平方,所以让每一个房间的大小平均即可,即最大和最小相差不超过一. 代码: #include<bits/stdc++.h> #define ll long long using namespace std; ll n; int main() { //freopen("H:\\c++1\\in.txt","r",stdin); //freopen("H:\\c++1\\out.txt…

DEF 题对于 wyh 来说过于毒瘤,十分不可做. A. Heating Description: 给定\(a,b\),将\(b\)分成至少\(a\)个正整数,使这些正整数的平方和最小. Solution: sb题,3minA掉,但是提交代码花了我近20min Code: #include<iostream> #include<cstdio> #include<cstring> using namespace std; typedef long long ll; int…

题目 Given an integer n, return the number of trailing zeroes in n!. Note: Your solution should be in logarithmic time complexity. 分析 Note中提示让用对数的时间复杂度求解,那么如果粗暴的算出N的阶乘然后看末尾0的个数是不可能的. 所以仔细分析,N! = 1 * 2 * 3 * ... * N 而末尾0的个数只与这些乘数中5和2的个数有关,因为每出现一对5和2就会产生…

Given an integer n, return the number of trailing zeroes in n!. Note: Your solution should be in logarithmic time complexity. Credits:Special thanks to @ts for adding this problem and creating all test cases. 这道题并没有什么难度,是让求一个数的阶乘末尾0的个数,也就是要找乘数中10的个数,…

Write an algorithm which computes the number of trailing zeros in n factorial. Have you met this question in a real interview? Yes Example 11! = 39916800, so the out should be 2 Challenge O(log N) time LeetCode上的原题,请参见我之前的博客Factorial Trailing Zeroes.…

ld: '/Users/momo/Desktop/ThreeFingers/Pods/EaseMobSDKFull/EaseMobSDKFull/lib/libEaseMobClientSDK_arm64.a(easemobvideo.o)' does not contain bitcode. You must rebuild it with bitcode enabled (Xcode setting ENABLE_BITCODE), obtain an updated library fro…

最近碰到一个有趣的错误:海外的一台数据库服务器上某些作业偶尔会报错,报错信息如下所示: ------------------------------------------------------------------------------------------------------------------------------------------------- 日期 2013/9/15 12:00:00 日志 作业历史记录 (JOB_SYNCHRONIZING_ESCM_DATA…

案例描述 昨晚踢球回来,接到电话说一个系统的几个比较重要作业出错,导致系统数据有些问题.让我赶紧检查看看.检查作业日志时发现,作业报如下错误(关键信息用xxx替换) The job failed.  Unable to determine if the owner (xxxx\xxxx) of job xxxxx has server access (reason: Could not obtain information about Windows NT group/user 'xxxx\xx…