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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. typedef long long ll;
  5.  
  6. int main() {
  7.     ll n;
  8.     cin >> n;
  9.  
  10.     ll a[n+1];
  11.  
  12.     for(ll i = 1; i <= n; i++)
  13.         cin >> a[i];
  14.  
  15.     ll dp[n+1] = {0};
  16.  
  17.     dp[1] = max(a[1], 0LL);
  18.  
  19.     if(n >= 2)
  20.         dp[2] = max(a[1], a[2]);
  21.  
  22.     for(ll i = 3; i <= n; i++)
  23.         dp[i] = max(dp[i-1], a[i] + dp[i-2]);
  24.  
  25.     cout << dp[n];
  26.  
  27.     return 0;
  28. }
Success #stdin #stdout 0.01s 5316KB
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stdin
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5
2 -3 5 -8 7
stdout
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14
https://ideone.com/wVEElv
dp 2
language:
C++ (gcc 8.3)
created:
8 hours ago
visibility:
public

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