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  1. #include <bits/stdc++.h>
  2. using namespace std; 
  3.  
  4. typedef long long ll;   
  5.  
  6. const ll LINF = 1e18;  
  7.  
  8. const int N = 1e5 + 5;   
  9.  
  10. int n;   
  11. int x[N], y[N], z[N];  
  12. ll ans;  
  13.  
  14. // O(3^n)
  15. void recur(int i, int ty, int tz, ll cost) {
  16. 	if (i == n + 1) {
  17. 		ans = min(ans, cost);   
  18. 		return; 
  19. 	}
  20.  
  21. 	recur(i + 1, ty, tz, cost + x[i]); // mua món vật thứ i ở siêu thị A
  22. 	recur(i + 1, ty + 1, tz, cost + max(0, y[i] - ty)); // mua món vật thứ i ở siêu thị B
  23. 	recur(i + 1, ty, tz + 1, cost + max(0, z[i] - tz));  // mua món vật thứ i ở siêu thị C  
  24. }
  25.  
  26. void do_sub1() {
  27. 	ans = LINF;  
  28. 	recur(1, 0, 0, 0);   
  29. 	cout << ans << '\n';
  30. }
  31.  
  32. int main() {
  33. 	ios::sync_with_stdio(0); cin.tie(0);  
  34. 	cin >> n; 
  35. 	for (int i = 1; i <= n; i++) cin >> x[i] >> y[i] >> z[i];   
  36.  
  37. 	if (n <= 10) do_sub1();     
  38. }
Success #stdin #stdout 0.01s 5272KB
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https://ideone.com/Q3JEa1
language:
C++14 (gcc 8.3)
created:
1 year ago
visibility:
secret

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