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  1. #include<bits/stdc++.h>
  2. using namespace std;
  3. //#define mx 1000
  4. //int price[mx],weight[mx],dp[mx][mx];
  5.  
  6. int knapSack(int wt[], int val[], int n, int W)
  7. {
  8.     int *dpPrev, *dpCurr, *tmp;
  9.     dpPrev = new int[W+1];
  10.     dpCurr = new int[W+1];
  11.  
  12.     for(int i=0; i<=n; i++)
  13.     {
  14.         for(int m=0; m<= W; m++)
  15.         {
  16.             if (i==0 || m==0)        dpCurr[m] = 0;
  17.  
  18.             else if (wt[i-1] <= m)   dpCurr[m] = max(val[i-1] + dpPrev[m-wt[i-1]],  dpPrev[m]);
  19.  
  20.             else                     dpCurr[m] = dpPrev[m];
  21.         }
  22.  
  23.         tmp = dpPrev;
  24.         dpPrev = dpCurr;
  25.         dpCurr = tmp;
  26.     }
  27.  
  28.     return dpPrev[W];
  29. }
  30.  
  31.  
  32. int main()
  33. {
  34.     int n,W,*va,*wt;
  35.  
  36.     cin>>W>>n;
  37.  
  38.     va = new int[n];
  39.  
  40.     wt = new int[n];
  41.  
  42.     for(int i=0;i<n;i++)   cin>>va[i]>>wt[i];
  43.  
  44.     cout<<knapSack(wt, va, n, W)<<endl;
  45.  
  46.  
  47.     return 0;
  48. }
Success #stdin #stdout 0s 3472KB
comments (?)
stdin
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10 3
7 3
8 8
4 6
stdout
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11
https://ideone.com/BzOIGD
language:
C++14 (gcc 8.3)
created:
7 years ago
visibility:
public

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