Language: C++

// Marcin Knapik
#include<bits/stdc++.h>
#pragma GCC optimize("O3")
#pragma GCC optimize("Ofast")
#pragma GCC optimize("unroll-loops")

using namespace std;

// #include <ext/pb_ds/assoc_container.hpp> // order_of_key
// #include <ext/pb_ds/tree_policy.hpp> // find by order
// using namespace __gnu_pbds; 
// #define ordered_set tree< int , null_type,less< int >, rb_tree_tag,tree_order_statistics_node_update>  

// const ll MAX_LL = 0xFFFFFFFFFFFFFFFF;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
#define losuj(a, b) uniform_int_distribution<ll>(a, b)(rng)
 
typedef long double             ld;
typedef long long               ll;
typedef pair<int, int>          ii;
typedef vector<int>             vi;
typedef vector<ll>              vll;
typedef vector<vll>             vvll;
typedef vector<ii>              vii;
typedef vector<vi>              vvi;
typedef vector<vii>             vvii;
#define pll pair<long long, long long>
#define vpll vector<pll> 
#define ull unsigned long long

#define sz(a)                   (int)(a).size()
#define pb                      push_back
#define all(c)                  (c).begin(), (c).end()
#define rall(c)                 (c).rbegin(), (c).rend()
#define FOR(i, a)               for (int i = 0; i < (a); i++)
#define f                       first
#define s                       second

template <class T> inline bool setmin(T &a, T b){if (a > b)return a = b, 1;return 0;}
template <class T> inline bool setmax(T &a, T b){if (a < b)return a = b, 1;return 0;}

template<class T> inline T fast(T a,T b,T mod) {ll res = 1; while(b){if(b&1) res = (res*a)%mod;a = (a*a)%mod;b >>= 1;}return res;}
template<class T> istream &operator>>(istream &os, vector<T> &container){for (auto &u : container)os >> u;return os;}
template<class T> ostream &operator<<(ostream &os, const vector<T> &container){for (auto &u : container)os << u << " ";return os;}
template<class T> inline T gcd(T a, T b) { while (b)swap(a %= b, b); return abs(a); }

const ll INF = 1e9 + 7;
const ll mod = 998244353;
const ll BIG_INF = 1e18 + 7;
const ll N = 1e6+7;
const ll T = 1<<20;
const ld inf = 1e18;

ll n, m, q, k, r;
const int MAXI = (200 * 80 + 1000 + 1) / 2 + 1000;
ll dp[81][MAXI];

void solve(){
    cin >> n;
    for(int i = 0; i < 81; i++)
        FOR(j, MAXI)
            dp[i][j] = -BIG_INF;
    dp[0][0] = 1000;
    
    for(int i = 1; i <= n; i++){
        int temp;
        cin >> temp;

        for(int j = 0; j < MAXI; j++){
            int ile = dp[i - 1][j];
            for(int l = -j; l < MAXI; l++){
                int zmiana = l * temp;
                if(zmiana > ile)
                    break;
                setmax(dp[i][j + l], ile - zmiana); 
            }
        }
    }
    cout << dp[n][0] << '\n';
}

signed main(){
  ios::sync_with_stdio(0);
  cin.tie(0);

  q = 1;
  // cin >> q;

  for(int i = 1; i <= q; i++)
    solve();
} 

Compiler output:
a.cc: In function 'void solve()':
a.cc:75:23: error: no matching function for call to 'setmax(ll&, int)'
   75 |                 setmax(dp[i][j + l], ile - zmiana);
      |                 ~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~
a.cc:40:32: note: candidate: 'template<class T> bool setmax(T&, T)'
   40 | template <class T> inline bool setmax(T &a, T b){if (a < b)return a = b, 1;return 0;}
      |                                ^~~~~~
a.cc:40:32: note:   template argument deduction/substitution failed:
a.cc:75:23: note:   deduced conflicting types for parameter 'T' ('long long int' and 'int')
   75 |                 setmax(dp[i][j + l], ile - zmiana);
      |                 ~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~