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  1. #include <bits/stdc++.h> // ZENDA
  2. using namespace std;
  3. #define ll long long
  4. const ll limn=1e4+7;
  5. const ll limm=500+7;
  6. ll dp[limn][limm][2];
  7. ll n,m,c;
  8. vector <ll> a;
  9. int main(){
  10.     cin.tie(nullptr)->sync_with_stdio(0);
  11.     #define F "TROCHOI"
  12.     if (ifstream(F".inp")){
  13.         freopen(F".inp","r",stdin);
  14.         freopen(F".out","w",stdout);
  15.     }
  16.     cin>>n>>m>>c;
  17.     a.resize(n+1);
  18.     for (ll i=1;i<=n;i++) cin>>a[i];
  19.     for (ll i=1;i<=n;i++)
  20.         for (ll j=0;j<=m;j++){
  21.             if (j>0){
  22.                 if (dp[i-1][j][1]>=c) dp[i][j-1][0]=max(dp[i][j-1][0],dp[i-1][j][1]-c);
  23.                 if (dp[i-1][j][0]>=c) dp[i][j-1][0]=max(dp[i][j-1][0],dp[i-1][j][0]-c);
  24.             }
  25.             if (j<m) dp[i][j+1][1]=max(dp[i][j+1][1],dp[i-1][j][1]+a[i]);
  26.             if(j==0) dp[i][j+1][1]=max(dp[i][j+1][1],dp[i-1][j][0]+a[i]);
  27.             dp[i][j][0]=max(dp[i][j][0],dp[i-1][j][0]);
  28.             dp[i][j][0]=max(dp[i][j][0],dp[i-1][j][1]);
  29.         }
  30.     cout<<dp[n][0][0];
  31.     return 0;
  32. }
Success #stdin #stdout 0.01s 5320KB
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stdout 
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https://ideone.com/xc7wiz
language:
C++14 (gcc 8.3)
created:
3 days ago
visibility:
public

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