Re: Fractional Knapsack

From Soiled Peccary, 5 Years ago, written in C++.

This paste is a reply to Fractional Knapsack from Greedy - go back

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Viewing differences between Fractional Knapsack and Re: Fractional Knapsack

//knapsack
#include
using namespace std;

struct item{
    int weight,price;
    double PUprice;
}arr[10004];

bool cmp(item a, item b){
    if(a.PUprice>=b.PUprice)return true;
    else return false;
}

int main(){
    int KScapacity,items;
    double profit=0.0;
    scanf("%d %d",&KScapacity,&items);
    for(int i=0;i         scanf("%d",&arr[i].weight);
    }
    for(int i=0;i         scanf("%d",&arr[i].price);
        arr[i].PUprice=(arr[i].price*1.0)/arr[i].weight;
    }
    sort(arr,arr+items,cmp);
    for(int i=0;i         if(arr[i].weight>=KScapacity){
            profit=profit+arr[i].PUprice*KScapacity;
            arr[i].weight=arr[i].weight-KScapacity;
            KScapacity=0;
            break;
        }
        else{
            KScapacity=KScapacity-arr[i].weight;
            profit=profit+arr[i].price;
        }
    }
    printf("\nprofit = %.5lf\n",profit);

    return 0;
}

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//knapsack
#include&lt;bits/stdc++.h&gt;
using namespace std;

struct item{
    int weight,price;
    double PUprice;
}arr[10004];

bool cmp(item a, item b){
    if(a.PUprice&gt;=b.PUprice)return true;
    else return false;
}

int main(){
    int KScapacity,items;
    double profit=0.0;
    scanf(&quot;%d %d&quot;,&amp;KScapacity,&amp;items);
    for(int i=0;i&lt;items;i++){
        scanf(&quot;%d&quot;,&amp;arr[i].weight);
    }
    for(int i=0;i&lt;items;i++){
        scanf(&quot;%d&quot;,&amp;arr[i].price);
        arr[i].PUprice=(arr[i].price*1.0)/arr[i].weight;
    }
    sort(arr,arr+items,cmp);
    for(int i=0;i&lt;items;i++){
        if(arr[i].weight&gt;=KScapacity){
            profit=profit+arr[i].PUprice*KScapacity;
            arr[i].weight=arr[i].weight-KScapacity;
            KScapacity=0;
            break;
        }
        else{
            KScapacity=KScapacity-arr[i].weight;
            profit=profit+arr[i].price;
        }
    }
    printf(&quot;\nprofit = %.5lf\n&quot;,profit);

return 0;
}

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Re: Fractional Knapsack

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