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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int N, K, koin[505];
  5. int memo[50005];
  6.  
  7. int topdown(int total) {
  8. 	if(total == 0)
  9. 		return 0;
  10. 	if(memo[total] != -1)
  11. 		return memo[total];
  12. 	int best = 1e9; // 1.234e9 = 1.234*10^9
  13. 	for(int i = 0; i < N; i++)
  14. 		if(total >= koin[i])
  15. 			best = min(best, topdown(total-koin[i])+1);
  16. 	return memo[total] = best;
  17. }
  18.  
  19. int main() {
  20. 	cin >> N;
  21. 	for(int i = 0; i < N; i++)
  22. 		cin >> koin[i];
  23. 	cin >> K;
  24. 	memset(memo, -1, sizeof(memo));
  25.  
  26. 	// top-down
  27. 	// cout << topdown(K) << endl;
  28.  
  29. 	// bottom-up
  30. 	memo[0] = 0;
  31. 	for(int i = 1; i <= K; i++) {
  32. 		int best = 1e9;
  33. 		for(int j = 0; j < N; j++)
  34. 			if(i >= koin[j])
  35. 				best = min(best, memo[i-koin[j]]+1);
  36. 		memo[i] = best;
  37. 	}
  38. 	cout << memo[K] << endl;
  39. 	return 0;
  40. }
Success #stdin #stdout 0.01s 5304KB
comments (?)
stdin 
4
1 2 5 6
10
stdout 
2
https://ideone.com/SZEvzH
language:
C++ (gcc 8.3)
created:
15 days ago
visibility:
public

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