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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. #define foru(i,a,b) for(int i=(a); i<=(b); ++i)
  5. #define ford(i,a,b) for(int i=(a); i>=(b); --i)
  6. #define rep(i,a) for(int i=0; i<(a); ++i)
  7. #define bit(s,i) (((s)>>(i))&1)
  8. #define all(a) (a).begin(),(a).end()
  9. #define sz(a) (int)(a).size()
  10. #define ii pair<int,int>
  11. #define fi first
  12. #define se second
  13. #define eb emplace_back
  14. #define pb push_back
  15. #define ll long long
  16. #define __builtin_popcount(a) __builtin_popcountll(a)
  17. #define _ << " " <<
  18.  
  19. template <class X, class Y> bool maxi(X &x, Y y){return x<y?x=y,true:false;}
  20. template <class X, class Y> bool mini(X &x, Y y){return x>y?x=y,true:false;}
  21.  
  22. const int N=5050;
  23. const int M=20202;
  24.  
  25. bool st_mem;
  26.  
  27. int n,m,k;
  28. ll pre[N][N/2], suf[N][N/2];
  29.  
  30. struct Item{
  31.     int price, value;
  32.     bool operator < (const Item &o) const {
  33.         return price < o.price;
  34.     }
  35. } item[N];
  36.  
  37. namespace Smaller{
  38.     ll solve(){
  39.         ll res=0;
  40.  
  41.         int tot=0;
  42.         foru(i,1,n){
  43.             tot+=item[i].price;
  44.             if(tot > m) break;
  45.  
  46.             foru(j,0,k){
  47.                 maxi(res, pre[i][j]+suf[i+1][j]);
  48. //                if(pre[i][j] + suf[i+1][j] == 330639607) cout << pre[i][j] _ suf[i+1][j] << '\n';
  49.             }
  50.         }
  51.  
  52.         return res;
  53.     }
  54. }
  55.  
  56. namespace Equal{
  57.     ll dp[M];
  58.  
  59.     ll solve(){
  60.         foru(i,0,m) dp[i]=-1e18;
  61.  
  62.         ll res=0;
  63.  
  64.         int tot=0; ll mx=-1e18;
  65.         foru(i,1,n){
  66.             if(tot<=m) maxi(dp[tot], pre[i-1][k]), maxi(mx, dp[tot]);
  67.             ford(j,m,item[i].price){
  68.                 maxi(dp[j], dp[j-item[i].price] + item[i].value);
  69.                 maxi(mx, dp[j]);
  70.             }
  71.             maxi(res, mx + suf[i+1][k]);
  72. //            if(mx + suf[i+1][k] == 2674101897) cout << i << " ";
  73.             tot+=item[i].price;
  74.         }
  75.  
  76.         return res;
  77.     }
  78. }
  79.  
  80. bool en_mem;
  81.  
  82. void solve(){
  83.     cin>>n>>m>>k; k/=2;
  84.  
  85.     foru(i,1,n) cin>>item[i].price;
  86.     foru(i,1,n) cin>>item[i].value;
  87.  
  88.     sort(item+1, item+1+n);
  89. //    foru(i,1,n) cout<<item[i].price _ item[i].value << '\n';
  90.  
  91.     pre[0][0]=suf[n+1][0]=0;
  92.     foru(j,1,k) pre[0][j]=suf[n+1][j]=-1e18;
  93.  
  94.     foru(i,1,n) foru(j,0,k){
  95.         pre[i][j]=-1e18;
  96.  
  97.         maxi(pre[i][j], pre[i-1][j] + item[i].value);
  98.         if(j>0) maxi(pre[i][j], pre[i-1][j-1]);
  99.     }
  100.  
  101.     ford(i,n,1) foru(j,0,k){
  102.         suf[i][j]=-1e18;
  103.  
  104.         maxi(suf[i][j], suf[i+1][j]);
  105.         if(j>0) maxi(suf[i][j], suf[i+1][j-1] + item[i].value);
  106.     }
  107.  
  108.     cout<<max(Smaller::solve(), Equal::solve())<<'\n';
  109. }
  110.  
  111. int32_t main(){
  112.     #define task "test"
  113.     if(fopen(task".inp","r")){
  114.         freopen(task".inp","r",stdin);
  115.         freopen(task".out","w",stdout);
  116.     }
  117.     cin.tie(0)->sync_with_stdio(0);
  118.  
  119. //    printf("Memory used: %.2fMB\n", (&st_mem-&en_mem) / 1024.0 / 1024.0);
  120.     int tc; cin>>tc;
  121.     rep(i,tc){
  122.         solve();
  123.     }
  124. }
  125.  
Success #stdin #stdout 0.01s 5616KB
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https://ideone.com/wZ95N0
language:
C++ (gcc 8.3)
created:
1 day ago
visibility:
public

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