C. Platforms Jumping There is a river of width n. The left bank of the river is cell 0 and the right bank is cell n+1 (more formally, the river can be represented as a sequence of n+2 cells numbered from 0 to n+1). There are also m wooden platforms o…

There is a river of width nn. The left bank of the river is cell 00 and the right bank is cell n+1n+1 (more formally, the river can be represented as a sequence of n+2n+2 cells numbered from 00 to n+1n+1). There are also mm wooden platforms on a rive…

Codeforces Round #598 (Div. 3)- E. Yet Another Division Into Teams - 动态规划 [Problem Description] 给你\(n\)个数,将其划分为多组,对于每个组定义其\(d\)值为 组内的最大值减最小值,问如何划分使得最终所有组的\(d\)值之和最小.每个组至少要保证有\(3\)个数. [Solution] 将所有值从小到大排序,然后我们知道最多有\(5\)个人划分到同一组中,如果有\(6\)个人,那么划分为两组一定比…

Codeforces Round #267 (Div. 2) C. George and Job题目链接请点击~ The new ITone 6 has been released recently and George got really keen to buy it. Unfortunately, he didn't have enough money, so George was going to work as a programmer. Now he faced the follow…

https://codeforces.com/contest/1256 A:Payment Without Change[思维] 题意:给你a个价值n的物品和b个价值1的物品,问是否存在取物方案使得价值为s 题解:min(s/n,a)*n+b>=s?YES:NO #include<iostream> #include<cstdio> #include<cstdlib> #include<cmath> #include<algorithm>…

传送门 A. Payment Without Change 签到. Code /* * Author: heyuhhh * Created Time: 2019/11/4 21:19:19 */ #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() #d…

A. Payment Without Change   #include<bits/stdc++.h> using namespace std; #define int long long #define N 100500 int arr[N]; signed main(){ int _; cin>>_; while(_--){ int a,b,n,s; cin>>a>>b>>n>>s; int y=s/n; int x=min(a,…

http://codeforces.com/contest/1077/problem/A A frog is currently at the point 00 on a coordinate axis OxOx. It jumps by the following algorithm: the first jump is aa units to the right, the second jump is bb units to the left, the third jump is aa un…

题:https://codeforces.com/contest/1256/problem/E 题意:给一些值,代表队员的能力值,每组要分3个或3个以上的人,然后有个评价值x=(队里最大值-最小值),问最小的∑x是多少,以及输出方案 学习粗:https://www.cnblogs.com/Lubixiaosi-Zhaocao/p/11797744.html dp路径转移 #include<bits/stdc++.h> using namespace std; ; struct node{ in…

F. Equalizing Two Strings You are given two strings s and t both of length n and both consisting of lowercase Latin letters. In one move, you can choose any length len from 1 to n and perform the following operation: Choose any contiguous substring o…