zoukankan      html  css  js  c++  java
  • pat1070. Mooncake (25)

    1070. Mooncake (25)

    时间限制
    100 ms
    内存限制
    65536 kB
    代码长度限制
    16000 B
    判题程序
    Standard
    作者
    CHEN, Yue

    Mooncake is a Chinese bakery product traditionally eaten during the Mid-Autumn Festival. Many types of fillings and crusts can be found in traditional mooncakes according to the region's culture. Now given the inventory amounts and the prices of all kinds of the mooncakes, together with the maximum total demand of the market, you are supposed to tell the maximum profit that can be made.

    Note: partial inventory storage can be taken. The sample shows the following situation: given three kinds of mooncakes with inventory amounts being 180, 150, and 100 thousand tons, and the prices being 7.5, 7.2, and 4.5 billion yuans. If the market demand can be at most 200 thousand tons, the best we can do is to sell 150 thousand tons of the second kind of mooncake, and 50 thousand tons of the third kind. Hence the total profit is 7.2 + 4.5/2 = 9.45 (billion yuans).

    Input Specification:

    Each input file contains one test case. For each case, the first line contains 2 positive integers N (<=1000), the number of different kinds of mooncakes, and D (<=500 thousand tons), the maximum total demand of the market. Then the second line gives the positive inventory amounts (in thousand tons), and the third line gives the positive prices (in billion yuans) of N kinds of mooncakes. All the numbers in a line are separated by a space.

    Output Specification:

    For each test case, print the maximum profit (in billion yuans) in one line, accurate up to 2 decimal places.

    Sample Input:
    3 200
    180 150 100
    7.5 7.2 4.5
    
    Sample Output:
    9.45
    

    提交代码

     1 #include<cstdio>
     2 #include<algorithm>
     3 #include<cstring>
     4 #include<iostream>
     5 #include<stack>
     6 #include<set>
     7 #include<map>
     8 #include<cmath>
     9 using namespace std;
    10 #define exp 1e-8
    11 struct mooncake{
    12     double amount,price;
    13 };
    14 bool cmp(mooncake a,mooncake b){
    15     return (a.price/a.amount)>(b.price/b.amount);
    16 }
    17 mooncake cake[1005];
    18 int main(){
    19     //freopen("D:\INPUT.txt","r",stdin);
    20     int n,D;
    21     scanf("%d %d",&n,&D);
    22     int i;
    23     for(i=0;i<n;i++){
    24         scanf("%lf",&cake[i].amount);
    25     }
    26     for(i=0;i<n;i++){
    27         scanf("%lf",&cake[i].price);
    28     }
    29     double profit=0;
    30     sort(cake,cake+n,cmp);
    31     /*for(i=0;i<n;i++){
    32         printf("%lf %lf
    ",cake[i].amount,cake[i].price);
    33     }*/
    34     for(i=0;i<n;i++){
    35         if(cake[i].amount<=D){
    36             D-=cake[i].amount;
    37             profit+=cake[i].price;
    38         }
    39         else{
    40             profit+=cake[i].price/cake[i].amount*D;
    41             break;
    42         }
    43         //cout<<profit<<"  "<<D<<endl;
    44     }
    45     printf("%.2lf
    ",profit);
    46     return 0;
    47 }
  • 相关阅读:
    点击单元格(LinkToAction)获取Table行号和数据(Table篇一)
    金额和数量不显示0
    自定event事件之全局初始化中自动触发(二)
    自定event事件之手动触发(一)
    Python的requests如何同时post图片二进制流和json数据application/octet-stream
    树莓派点亮LED灯需要几行代码?3行。小孩子都能学会
    50元求解pyqt加载并显示pdf问题
    pyqt5加载pdf文档失败
    建个群,互相关心
    唉,十年前的沙雕照片
  • 原文地址:https://www.cnblogs.com/Deribs4/p/4780329.html
Copyright © 2011-2022 走看看