Submission #1321498

#	Time	Username	Problem	Language	Result	Execution time	Memory
1321498		NgTrung2217	Cloud Computing (CEOI18_clo)	C++20	100 / 100	587 ms	1460 KiB

clo

#include <bits/stdc++.h>

#define task ""
#define ff first
#define ss second

using namespace std;

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

const char el = '\n';
const char sp = ' ';
const int maxN = 100005;
const ll INF = 1e16;

struct Item
{
    ll c, f, v;
    int type;
};

int n, m;
ll dp[maxN + 5];
vector <Item> v;

bool compareItems (const Item &a, const Item &b)
{
    if (a.f == b.f) return a.type < b.type;
    return a.f > b.f;
}

void solve ()
{
    if (!(cin >> n)) return;
    for (int i = 0;i < n;++i)
    {
        ll c, f, v_val;
        cin >> c >> f >> v_val;
        v.push_back({c, f, v_val, 0});
    }
    
    cin >> m;
    for (int i = 0;i < m;++i)
    {
        ll c, f, v_val;
        cin >> c >> f >> v_val;
        v.push_back({c, f, v_val, 1});
    }
    
    sort(v.begin(), v.end(), compareItems);
    
    for (int i = 0;i <= maxN;++i) dp[i] = -INF;
    dp[0] = 0;
    
    ll ans = 0;
    for (auto &it : v)
    {
        if (it.type == 1)
        {
            for (int i = 0;i + it.c <= maxN;++i)
            {
                dp[i] = max(dp[i], dp[i + (int)it.c] + it.v);
            }
        }
        else
        {
            for (int i = maxN;i >= it.c;--i)
            {
                dp[i] = max(dp[i], dp[i - (int)it.c] - it.v);
            }
        }
        for (int i = 0;i <= maxN;++i) ans = max(ans, dp[i]);
    }
    
    cout << ans << el;
}

int main ()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    if (fopen(task ".inp", "r"))
    {
        freopen(task ".inp", "r", stdin);
        freopen(task ".out", "w", stdout);
    }
    
    solve();
    
    return 0;
}

Compilation message (stderr)

clo.cpp: In function 'int main()':
clo.cpp:85:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   85 |         freopen(task ".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
clo.cpp:86:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   86 |         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