B. Powers of Two You are given n integers a1, a2, ..., an. Find the number of pairs of indexes i, j (i < j) that ai + aj is a power of 2 (i. e. some integer xexists so that ai + aj = 2x). Input The first line contains the single positive integer n
KiKi's K-Number Time Limit: 4000/2000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 2546 Accepted Submission(s): 1174 Problem Description For the k-th number, we all should be very familiar with it. Of course,t
Minimum Inversion Number Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 18543 Accepted Submission(s): 11246 Problem Description The inversion number of a given number sequence a1, a2, ..., a
2^k求法 int lowbit(int x) { return x&(-x); } lowbit()的返回值就是 2^k 次方的值. 基本树形数组的模板 import java.util.*; public class Main1{ ; static int n,x,ans; static int c[] = new int [N]; static int a[] = new int [N]; public static int sum(int n){ ; ){ sum+=c[n]; n-=n
Rikka with Competition Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 772 Accepted Submission(s): 588 Problem Description As we know, Rikka is poor at math. Yuta is worrying about this situa
Problem Description As we know, Rikka is poor at math. Yuta is worrying about this situation, so he gives Rikka some math tasks to practice. There is one of them: A wrestling match will be held tomorrow. n players will take part in it. The ith player
B. Micro-World time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output You have a Petri dish with bacteria and you are preparing to dive into the harsh micro-world. But, unfortunately, you don't h
乘风破浪:LeetCode真题_011_Container With Most Water 一.前言 下面我们继续进行编程练习,可以说对于实际问题的活学活用是非常重要的.比如我们这次的题目,就需要从中找到问题的性质,然后去庖丁解牛. 二.Container With Most Water 2.1 问题理解 2.2 问题分析与解决 题意我们很容易读懂,就是求木桶的最大盛水量,底乘以高就可以了,其中底也非常容易求得,就是高需要取得两者的最小值.最简单的办法就是我们通过两个for循环,暴力的
2017-09-22 22:01:19 writer:pprp As we know, Rikka is poor at math. Yuta is worrying about this situation, so he gives Rikka some math tasks to practice. There is one of them: A wrestling match will be held tomorrow. nn players will take part in it. T
Rikka with Competition Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/65536 K (Java/Others) Total Submission(s): 445 Accepted Submission(s): 366 Problem Description As we know, Rikka is poor at math. Yuta is worrying about this situ
A. 一个小模拟 不解释 //By SiriusRen #include <bits/stdc++.h> using namespace std; long long n,m,a,b; int main(){ scanf("%I64d%I64d%I64d%I64d",&n,&m,&a,&b); printf("%I64d\n",min((n%m)*b,(m-(n%m))*a)); } B. 给你一个数列A[i] 把所
D. Maximum Value You are given a sequence a consisting of n integers. Find the maximum possible value of (integer remainder of ai divided byaj), where 1 ≤ i, j ≤ n and ai ≥ aj. Input The first line contains integer n — the length of the sequence