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  1. #include<bits/stdc++.h>
  2.  
  3. using namespace std;
  4.  
  5.  
  6. class Knapsack{
  7.   public: 
  8.     long long maximumValue(vector<int>& weights, vector<int>& values, int n, int capacity) {
  9. 	    long long total_value = 0;
  10. 	    for(int v : values) total_value += v;
  11.  
  12. 	    vector<long long> dp(total_value+1, LLONG_MAX);
  13. 	    dp[0] = 0;
  14.  
  15. 	    for(int i = 0; i < n; ++i) {
  16. 	    	for(int v = total_value; v >= values[i]; --v) {
  17. 	    		if(dp[v - values[i]] != LLONG_MAX) {
  18. 		            dp[v] = min(
  19. 		                dp[v],
  20. 		                weights[i] + dp[v - values[i]]
  21. 		            );
  22.         		}
  23. 	    	}
  24. 	    }
  25.  
  26. 	    int res = 0;
  27. 	    for(int v = total_value; v > 0; --v) {
  28. 	    	if(dp[v] <= capacity) {
  29. 	    		res = v;
  30. 	    		break;
  31. 	    	}
  32. 	    }
  33.     	return res;
  34.     }
  35. };
  36.  
  37.  
  38. int main() {
  39.   int n, c; 
  40.   cin >> n >> c;
  41.   vector<int> weights(n), values(n);
  42.  
  43.   for(int i = 0; i < n; ++i) {
  44.     cin >> weights[i] >> values[i];
  45.   }
  46.  
  47.   Knapsack* obj = new Knapsack();
  48.   cout << obj->maximumValue(weights, values, n, c);
  49.   return 0;
  50. }
Success #stdin #stdout 0.01s 5312KB
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https://ideone.com/JBGj0b
language:
C++ (gcc 8.3)
created:
2 hours ago
visibility:
public

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