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  1. #include <iostream>
  2. #include <vector>
  3. #include <algorithm>
  4. using namespace std;
  5.  
  6. struct Item {
  7.     double weight, value;
  8. };
  9.  
  10. bool cmp(Item a, Item b) {
  11.     return (a.value / a.weight) > (b.value / b.weight);
  12. }
  13.  
  14. int main() {
  15.     int n;
  16.     double W;
  17.     cin >> n >> W;
  18.  
  19.     vector<Item> items(n);
  20.     for (int i = 0; i < n; i++) {
  21.         cin >> items[i].weight >> items[i].value;
  22.     }
  23.  
  24.     sort(items.begin(), items.end(), cmp);
  25.  
  26.     double total = 0.0;
  27.     double remaining = W;
  28.  
  29.     for (int i = 0; i < n; i++) {
  30.         if (items[i].weight <= remaining) {
  31.             total += items[i].value;
  32.             remaining -= items[i].weight;
  33.         } else {
  34.             total += (items[i].value / items[i].weight) * remaining;
  35.             break;
  36.         }
  37.     }
  38.  
  39.     int hasil = (int)total;
  40.  
  41.     string s = to_string(hasil);
  42.     for (int i = 0; i < s.size(); i++) {
  43.         cout << s[i];
  44.         if (i < s.size() - 1) cout << " ";
  45.     }
  46.     cout << endl;
  47. }
  48.  
Success #stdin #stdout 0.01s 5276KB
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https://ideone.com/qeV0fq
language:
C++ (gcc 8.3)
created:
3 hours ago
visibility:
public

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