fork download
copy 
  1. #include <bits/stdc++.h>
  2. using namespace std;
  3. typedef long long ll;
  4. const ll NEG = -1e18;
  5. const ll INF = 1e18;
  6. const ll N = 1e6 + 5;
  7. signed main ()
  8. {
  9.     ios_base::sync_with_stdio(false);
  10.     cin.tie(nullptr);
  11.     cout.tie(nullptr);
  12.  
  13.     ll t;
  14.     cin >> t;
  15.     while (t--)
  16.     {
  17.         ll n;
  18.         cin >> n;
  19.         if (n == 0)
  20.         {
  21.             cout << 0 << '\n';
  22.             continue;
  23.         }
  24.  
  25.         // dp[i][1] : lấy ở hiện tại (dp[i - 1][0] + a[i])
  26.         // dp[i][0] : bỏ qua không lấy ở lúc này (dp[i - 1][1])
  27.  
  28.         ll x;
  29.         cin >> x;
  30.         ll c0 = 0;
  31.         ll c1 = x;
  32.         for (int i = 2; i <= n; i++)
  33.         {
  34.             cin >> x;
  35.             ll cur1 = max(c0, c1);
  36.             ll cur2 = c0 + x;
  37.             c0 = cur1;
  38.             c1 = cur2;
  39.         }
  40.         cout << max(c0, c1) << '\n';
  41.     }
  42.  
  43.     return 0;
  44. }
  45.  
Success #stdin #stdout 0.01s 5288KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
140735772392728
https://ideone.com/KNoUeV
language:
C++ (gcc 8.3)
created:
2 hours ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!