Submission #981340

#	Time	Username	Problem	Language	Result	Execution time	Memory
981340		kh0i	Cloud Computing (CEOI18_clo)	C++17	100 / 100	317 ms	1628 KiB

clo

#include "bits/stdc++.h"
using namespace std;

#ifdef LOCAL
#include "debug.h"
#else
#define debug(...)
#endif

using ll = long long;
using pii = pair<int, int>;

#define F first
#define S second
#define sz(x) (int)((x).size())
#define all(x) (x).begin(), (x).end()

mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
ll get_rand(ll l, ll r) {
    assert(l <= r);
    return uniform_int_distribution<ll> (l, r)(rng);
}

void solve(){
    int n, m;
    cin >> n;
    vector<tuple<ll, bool, ll, ll>> x;
    for(int i = 1; i <= n; ++i){
        int c, f, v;
        cin >> c >> f >> v;
        x.emplace_back(f, 1, c, v);
    }
    cin >> m;
    for(int i = 1; i <= m; ++i){
        int c, f, v;
        cin >> c >> f >> v;
        x.emplace_back(f, 0, c, v);
    }

    sort(all(x));
    reverse(all(x));

    int mx = 20 * 5000;

    vector<ll> dp(mx + 5, -1e16);
    dp[0] = 0;

    for(auto [f, t, c, v] : x){
        if(t)
            for(int i = mx; i - c >= 0; --i)
                dp[i] = max(dp[i], dp[i - c] - v);
        else
            for(int i = 0; i + c <= mx; ++i)
                dp[i] = max(dp[i], dp[i + c] + v);
    }
    cout << *max_element(all(dp));
}

int32_t main() {
    cin.tie(nullptr)->sync_with_stdio(0);
    #define task "troll"
    if(fopen(task".inp", "r")){
        freopen(task".inp", "r", stdin);
        freopen(task".out", "w", stdout);
    }
    int test = 1;
//    cin >> test;
    for(int i = 1; i <= test; ++i){
//        cout << "Case #" << i << ": ";
        solve();
    }
    #ifdef LOCAL
        cerr << "\n[Time]: " << 1000.0 * clock() / CLOCKS_PER_SEC << " ms.\n";
    #endif
    return 0;
}

Compilation message (stderr)

clo.cpp: In function 'int32_t main()':
clo.cpp:63:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   63 |         freopen(task".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
clo.cpp:64:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   64 |         freopen(task".out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 18 / 18
• Subtask 2: 18 / 18
• Subtask 3: 18 / 18
• Subtask 4: 18 / 18
• Subtask 5: 18 / 18
• Subtask 6: 10 / 10