PTA乙级 （1020 月饼 (25分)）

1020 月饼 (25分)

https://pintia.cn/problem-sets/994805260223102976/problems/994805301562163200

#include <iostream>
#include <cstdio>
#include <cstring>
#include <string>
#include <cmath>
#include <algorithm>
#include <vector>
using namespace std;
struct mooncake{
	double number;
	double money;
	double pro;
};
bool cmp(mooncake a,mooncake b)
{
	return a.pro>=b.pro;
}
int main()
{
	mooncake m;
	int N,D;
	cin>>N>>D;
	vector<mooncake> vec(N);
	for(int i=0;i<N;i++) cin>>vec[i].number;
	for(int i=0;i<N;i++) cin>>vec[i].money;
	for(int i=0;i<N;i++) vec[i].pro=vec[i].money/vec[i].number;
	sort(vec.begin(),vec.end(),cmp);
	double sum=0,last=0;
		for(int i=0;i<vec.size();i++)
		{
			if(vec[i].number>=D-last) {sum+=(D-last)*vec[i].pro; break;}
			else {
				sum+=vec[i].money;
				last+=vec[i].number;
			     } 
		}
		printf("%.2f\n",sum);
		return 0;
}

标签：25,1020,int,money,pro,PTA,vec,mooncake,include
来源： https://www.cnblogs.com/jianqiao123/p/12256937.html