A. Two Rival Students There are…

You are the gym teacher in the school. There are nn students in the row. And there are two rivalling students among them. The first one is in position aa, the second in position bb. Positions are numbered from 11 to nn from left to right. Since they…

题目:两个竞争的学生 链接:(两个竞争的对手)[https://codeforces.com/contest/1257/problem/A] 题意:有n个学生排成一行.其中有两个竞争的学生.第一个学生在位置a,第二个学生在位置b,位置从左往右从1到n编号. 你的目的是在经过x次交换后,他们之间的距离最大.(每次交换都是交换相邻的两个学生) 分析: 1.答案是不可能大于n - 1的 2.两者之间的距离可以通过交换增加x,只要答案小于n - 1 因此,取两者最小值就是答案 #include <cst…

题意:给你n个人和两个尖子生a,b,你可以操作k次,每次操作交换相邻两个人的位置,求问操作k次以内使得ab两人距离最远是多少 题解:贪心尽可能的将两人往两边移动,总结一下就是min(n-1,|a-b|+x) 代码: #include<iostream> #include<cstdio> #include<cstdlib> using namespace std; int T; int n,m,a,b; int main() { scanf("%d",…

传送门 A. Two Rival Students 签到. Code /* * Author: heyuhhh * Created Time: 2019/11/13 22:37:26 */ #include <bits/stdc++.h> #define MP make_pair #define fi first #define se second #define sz(x) (int)(x).size() #define all(x) (x).begin(), (x).end() #defi…

题目链接:https://codeforces.com/problemset/problem/1256/A A. Payment Without Change time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output You have aa coins of value nn and bb coins of value 11. You a…

CF Educational Round 78 (Div2)题解报告A~E A:Two Rival Students​ 依题意模拟即可 #include<bits/stdc++.h> using namespace std; int T; int n, x, a, b; int main() { cin >> T; while(T--) { cin >> n >> x >> a >> b; if(a > b) swap(a, b…

原文地址:http://www.mimno.org/articles/ml-learn/ written by david mimno One of my students recently asked me for advice on learning ML. Here’s what I wrote. It’s biased toward my own experience, but should generalize. My current favorite introduction is…

RPCL是在线kmeans的改进版,相当于半自动的选取出k个簇心:一开始设定N个簇心,N>k,然后聚类.每次迭代中把第二近的簇心甩开一段距离. 所谓在线kmeans是就是,每次仅仅用一个样本来更新簇心位置,而不是用全部数据("批量"). 代码: % RPCL, rival penalized competitive learning,改进版的Kmeans % 根据http://www.cs.hmc.edu/~asampson/ap/ap.git移植而来,并根据RPCL原文进行了修…

染色判读二分图+Hungary匹配 The Accomodation of Students Time Limit: 5000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 1705    Accepted Submission(s): 821 Problem Description There are a group of students. Some of them…