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  1. #include<bits/stdc++.h>
  2. using namespace std;
  3. #define int long long
  4. #define fi first
  5. #define se second
  6. #define ii pair<int,int>
  7. #define lg2 20
  8. const int maxn=2e5+1;
  9. const int mod=109+7;
  10. int n,a[maxn],b[maxn],k,x,y,d[maxn],c[maxn];
  11.     signed main(){
  12.     ios_base::sync_with_stdio(0);
  13.     cin.tie(0);
  14.     cin>>n>>k>>x>>y;
  15.     for(int i=1;i<=n;i++)cin>>a[i];
  16.     for(int i=1;i<=n;i++)cin>>b[i];
  17.     c[0]=a[x];
  18.     d[0]=b[y];
  19.     for(int i=1;i<=n;i++){
  20.             c[i]=c[i-1],d[i]=d[i-1];
  21.         if(x-i>=1)
  22.             c[i]=max(c[i],a[x-i]);
  23.         if(x+i<=n)
  24.             c[i]=max(c[i],a[x+i]);
  25.         if(y-i>=1)
  26.             d[i]=max(d[i],b[y-i]);
  27.         if(y+i<=n)
  28.             d[i]=max(d[i],a[y+i]);
  29.     }
  30.     int ans=0;
  31.     for(int i=0;i<=min(n,k);i++){
  32.         ans=max(ans,c[i]+d[min(n,k-i)]);
  33.     }
  34.     cout<<ans;
  35. }
  36.  
Success #stdin #stdout 0.01s 5600KB
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https://ideone.com/VNURLp
language:
C++14 (clang 8.0)
created:
14 days ago
visibility:
public

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