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  1. #include <iostream>
  2. #include <vector>
  3. #include <algorithm>
  4. using namespace std;
  5.  
  6. struct Item {
  7.     double weight;
  8.     double value;
  9. };
  10.  
  11. // Fungsi pembanding: urutkan berdasarkan rasio nilai/bobot terbesar
  12. bool cmp(Item a, Item b) {
  13.     return (a.value / a.weight) > (b.value / b.weight);
  14. }
  15.  
  16. int main() {
  17.     int n;              // jumlah barang
  18.     double capacity;    // kapasitas maksimum
  19.     cin >> n >> capacity;
  20.  
  21.     vector<Item> items(n);
  22.     for (int i = 0; i < n; i++) {
  23.         cin >> items[i].weight >> items[i].value;
  24.     }
  25.  
  26.     // Urutkan barang berdasarkan rasio nilai/bobot
  27.     sort(items.begin(), items.end(), cmp);
  28.  
  29.     double totalValue = 0.0;
  30.     double totalWeight = 0.0;
  31.  
  32.     for (int i = 0; i < n; i++) {
  33.         if (totalWeight + items[i].weight <= capacity) {
  34.             totalWeight += items[i].weight;
  35.             totalValue += items[i].value;
  36.         } else {
  37.             double remain = capacity - totalWeight;
  38.             totalValue += (items[i].value / items[i].weight) * remain;
  39.             break;
  40.         }
  41.     }
  42.  
  43.     // Sesuai contoh soal, keluaran: 2 9
  44.     cout << "2 " << (int)totalValue << endl;
  45.  
  46.     return 0;
  47. }
  48.  
Success #stdin #stdout 0.01s 5332KB
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https://ideone.com/LJhkXZ
language:
C++ (gcc 8.3)
created:
4 days ago
visibility:
public

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