1042B. Vitamins

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Berland shop sells nn kinds of juices. Each juice has its price cici. Each juice includes some set of vitamins in it. There are three types of vitamins: vitamin "A", vitamin "B" and vitamin "C". Each juice can contain one, tw…

CodeForces - 1042B

Berland shop sells nn kinds of juices. Each juice has its price cici. Each juice includes some set of vitamins in it. There are three types of vitamins: vitamin "A", vitamin "B" and vitamin "C". Each juice can contain one, tw…

Codeforces Round #510 (Div. 2) B. Vitamins

B. Vitamins 题目链接:https://codeforces.com/contest/1042/problem/B 题意: 给出几种药,没种可能包含一种或多种(最多三种)维生素,现在问要吃到这三种维生素买药最少花费是多少. 题解: 嗯...可以直接暴力: #include <bits/stdc++.h> using namespace std; typedef long long ll; ; int n; int c[N]; ]; ]; int main(){ scanf("…

Gym - 101243F Vitamins(思维+并查集)

题意有三种药丸,白色W>红色R>蓝色B,给你m个约束条件,问你n个药丸的颜色,不能确定颜色输出‘?’ 题解如果1<2<3,只要找到2就能确定1和3的颜色如果2=4,只要确定一个就能确定另一个处理的时候先把=用并查集处理一下在处理<和>号代码 #include<bits/stdc++.h> using namespace std; ; ; int f[maxn]; int u[maxm],v[maxm],op[maxm]; vector<in…

【枚举】【并查集】Gym - 101243F - Vitamins

题意:有n片药,有三种颜色,白色比红色重,红色比蓝色重,给你一些它们之间的重量关系,比如1>3,2=4之类,问你它们的颜色,如果没法判断的输出?. 先并查集把等于号全缩起来,然后按照大于号建图,就是一张DAG,枚举所有的点,发现它如果是一个长度为3的链的中间结点,那么它.它指向的.指向它的颜色都可以判断了. 其他的都无法判断. #include<cstdio> #include<cstring> using namespace std; int v[2][499505],ne…

CF1042B 【Vitamins】（去重，状压搜索）

由题意,我们其实会发现对于每一种果汁,其对应的状态只有可能有7种 VA VB VC VA+VB VA+VC VB+VC VA+VB+VC 这道题就大大简化了我们把所有果汁都读进来每种状态取价格最小的(这才有可能最优) (在这里我状压了一下,用二进制表示其种类) 之后爆搜即可如果当前已满足(三种维生素都有了,答案就取min) 最后输出即可代码: #include<iostream> #include<cstdio> #include<cstring>…

2018SDIBT_国庆个人第三场

A - A CodeForces - 1042A There are nn benches in the Berland Central park. It is known that aiai people are currently sitting on the ii-th bench. Another mm people are coming to the park and each of them is going to have a seat on some bench out of n…