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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3. typedef long long int ll;
  4.  
  5. int main() {
  6.     int n, x, y;
  7.     cin >> n >> x >> y;
  8.  
  9.     vector<int> a(n), b(n);
  10.     for(int i = 0;i<n;i++){
  11.     	cin>>a[i];
  12.     }
  13.     for(int i = 0;i<n;i++){
  14.     	cin>>b[i];
  15.     }
  16.  
  17.  
  18.     ll base_sum = 0;
  19.     vector<int> diff(n);
  20.  
  21.     for (int i = 0; i < n; ++i) {
  22.         base_sum += b[i];
  23.         diff[i] = a[i] - b[i];
  24.     }
  25.  
  26.     sort(diff.rbegin(), diff.rend());
  27.     vector<ll> prefix(n + 1, 0);
  28.     for (int i = 1; i <= n; ++i) {
  29.         prefix[i] = prefix[i - 1] + diff[i - 1];
  30.     }
  31.  
  32.     ll max_tip = 0;
  33.     for (int i = 0; i <= n; ++i) {
  34.         if (i <= x && (n - i) <= y) {
  35.             ll total = base_sum + prefix[i];
  36.             max_tip = max(max_tip, total);
  37.         }
  38.     }
  39.  
  40.     cout << max_tip << '\n';
  41.     return 0;
  42. }
  43.  
Success #stdin #stdout 0.01s 5324KB
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stdin 
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stdout 
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https://ideone.com/rpfcQb
Delivery Man - Codechef
language:
C++ (gcc 8.3)
created:
19 days ago
visibility:
public

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