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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3. #define int long long
  4. #define dd double
  5. #define ld long double
  6. #define ull unsigned long long
  7. #define yes cout << "YES\n"
  8. #define no cout << "NO\n"
  9. #define el "\n"
  10. #define Arwa ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
  11. #define fix(x) cout << fixed << setprecision(x)
  12. #define all(v) v.begin(),v.end()
  13. #define dpp(v,val) memset(v,val,sizeof(v))
  14. #define mod 1e9+7
  15. #define oo 1e9
  16. const int N = 1e5 + 5;
  17. int n,k;
  18. vector<int>taste,cal;
  19. int dp[N];
  20. int solve(int i,int t,int c) 
  21. {
  22.    if(i==n) 
  23.    {
  24.       if(c*k-t==0&&t!=0) return t;
  25.       return 0;
  26.    }
  27.    int ret=dp[k*c-t];
  28.    if(t>k*c) ret=dp[t-k*c];
  29.    if(ret!=-1) return ret;
  30.    int tk=0,l=0;
  31.    tk=solve(i+1,t+taste[i],c+cal[i]);
  32.    l=solve(i+1,t,c);
  33.    return ret=max(tk,l);
  34. }
  35. void HereWeGoAgain()
  36. {
  37.   cin>>n>>k;
  38.   taste.resize(n); cal.resize(n);
  39.   for(int i=0;i<n;i++)
  40.   cin>>taste[i];
  41.   for(int i=0;i<n;i++)
  42.   cin>>cal[i];
  43.   dpp(dp,-1);
  44.   if(solve(0,0,0)==0)cout<<-1<<el;
  45.   else cout<<solve(0,0,0);
  46. }
  47. int32_t main() 
  48. {
  49.     Arwa
  50.     int t=1;
  51.     //cin>>t;
  52.     for(int i=1;i<=t;i++)
  53.     {
  54.     HereWeGoAgain();
  55.     }
  56.     return 0;
  57. }
  58.  
Success #stdin #stdout 0.01s 5320KB
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https://ideone.com/s2YrGx
language:
C++ (gcc 8.3)
created:
8 days ago
visibility:
public

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