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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3. typedef long long int ll;
  4.  
  5. ll ms(vector<ll>& a) {
  6.     ll n = a.size();
  7.     if(n==0)return 0;
  8.  
  9.     if(n==1){
  10.     	return max(a[0],0LL);
  11.  
  12.     }
  13.  
  14.     ll dp[n];
  15.     dp[0]=max(a[0],0LL);
  16.  
  17.     dp[1]=max(a[1],dp[0]);
  18.  
  19.     for(ll i=2;i<n;i++)
  20.         dp[i]=max(a[i]+dp[i-2],dp[i-1]);
  21.     return dp[n-1];
  22. }
  23.  
  24. int main() {
  25.     ll n;
  26.     cin>>n;
  27.     vector<ll> a(n);
  28.     for(ll i=0;i<n;i++)cin>>a[i];
  29.     cout<<ms(a)<<endl;
  30.     return 0;
  31. }
  32.  
Success #stdin #stdout 0.01s 5284KB
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https://ideone.com/TgeFVP
language:
C++ (gcc 8.3)
created:
3 days ago
visibility:
public

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