Language: C++

#define dor > debug & operator <<
#define eni(x) sim > typename \
  enable_if<sizeof dud<c>(0) x 1, debug&>::type operator<<(c i) {
sim > struct rge { c b, e; };
sim > rge<c> range(c i, c j) { return rge<c>{i, j}; }
sim > auto dud(c* x) -> decltype(cerr << *x, 0);
sim > char dud(...);
struct debug {
#ifdef LOCAL
~debug() { cerr << endl; }
eni(!=) cerr << boolalpha << i; ris; }
eni(==) ris << range(begin(i), end(i)); }
sim, class b dor(pair < b, c > d) {
  ris << "(" << d.first << ", " << d.second << ")";
}
sim dor(rge<c> d) {
  *this << "[";
  for (auto it = d.b; it != d.e; ++it)
    *this << ", " + 2 * (it == d.b) << *it;
  ris << "]";
}
#else
sim dor(const c&) { ris; }
#endif
};
#define imie(...) " [" << #__VA_ARGS__ ": " << (__VA_ARGS__) << "] "
 
using ll = long long;
 
void max_self(ll& a, ll b) {
    a = max(a, b);
}
 
 
int main() {
    int n;
    scanf("%d", &n);
    
   /* int base = 1;
    while(base <= n) {
        base *= 2;
    }
    // base is the smallest power of 2 that is not smaller than n
    vector<ll> tree(2 * base);
    */
    vector<int> h(n), a(n);
    for(int i = 0; i < n; ++i) {
        scanf("%d", &h[i]);
    }
    for(int i = 0; i < n; ++i) {
        scanf("%d", &a[i]);
    }
    vector<ll> dp(n + 1);
    // dp[i] - the max total beauty so far if the last taken flower has height i
    for(int flower = 0; flower < n; ++flower) {
        
        // max dp[i] for i in [0, h[flower]-1]
        /*int x = h[flower] + base;
        ll best = 0;
        while(x > 1) {
            if(x % 2 == 1) {
                max_self(best, tree[x-1]);
            }
            x /= 2;
        }
        dp[h[flower]] = best + a[flower];
        
        for(int i = base + h[flower]; i >= 1; i /= 2) {
            max_self(tree[i], dp[h[flower]]);
        }
        */
         for(int i = 0; i < h[flower]; ++i) {
           max_self(dp[h[flower]], dp[i] + a[flower]);
         }
    }
    ll answer = 0;
    for(int i = 0; i <= n; ++i) {
        max_self(answer, dp[i]);
    }
    printf("%lld\n", answer);
}

Compiler output:
a.cc:4:1: error: 'sim' does not name a type
    4 | sim > struct rge { c b, e; };
      | ^~~
a.cc:5:1: error: 'sim' does not name a type
    5 | sim > rge<c> range(c i, c j) { return rge<c>{i, j}; }
      | ^~~
a.cc:6:1: error: 'sim' does not name a type
    6 | sim > auto dud(c* x) -> decltype(cerr << *x, 0);
      | ^~~
a.cc:7:1: error: 'sim' does not name a type
    7 | sim > char dud(...);
      | ^~~
a.cc:23:1: error: 'sim' does not name a type
   23 | sim dor(const c&) { ris; }
      | ^~~
a.cc: In function 'void max_self(ll&, ll)':
a.cc:31:9: error: 'max' was not declared in this scope
   31 |     a = max(a, b);
      |         ^~~
a.cc: In function 'int main()':
a.cc:37:5: error: 'scanf' was not declared in this scope
   37 |     scanf("%d", &n);
      |     ^~~~~
a.cc:46:5: error: 'vector' was not declared in this scope
   46 |     vector<int> h(n), a(n);
      |     ^~~~~~
a.cc:46:12: error: expected primary-expression before 'int'
   46 |     vector<int> h(n), a(n);
      |            ^~~
a.cc:48:22: error: 'h' was not declared in this scope
   48 |         scanf("%d", &h[i]);
      |                      ^
a.cc:51:22: error: 'a' was not declared in this scope
   51 |         scanf("%d", &a[i]);
      |                      ^
a.cc:53:14: error: expected primary-expression before '>' token
   53 |     vector<ll> dp(n + 1);
      |              ^
a.cc:53:16: error: 'dp' was not declared in this scope
   53 |     vector<ll> dp(n + 1);
      |                ^~
a.cc:72:29: error: 'h' was not declared in this scope
   72 |          for(int i = 0; i < h[flower]; ++i) {
      |                             ^
a.cc:73:44: error: 'a' was not declared in this scope
   73 |            max_self(dp[h[flower]], dp[i] + a[flower]);
      |                                            ^
a.cc:80:5: error: 'printf' was not declared in this scope
   80 |     printf("%lld\n", answer);
      |     ^~~~~~
a.cc:1:1: note: 'printf' is defined in header '<cstdio>'; this is probably fixable by adding '#include <cstdio>'
  +++ |+#include <cstdio>
    1 | #define dor > debug & operator <<