Submission #482994

#	Time	Username	Problem	Language	Result	Execution time	Memory
482994		Lam_lai_cuoc_doi	Cloud Computing (CEOI18_clo)	C++17	100 / 100	308 ms	1228 KiB

clo

#include <bits/stdc++.h>

using namespace std;
using ll = long long;
using ld = long double;
using ull = unsigned long long;

template <class T>
void read(T &x)
{
    x = 0;
    register int c;
    while ((c = getchar()) && (c > '9' || c < '0'))
        ;
    for (; c >= '0' && c <= '9'; c = getchar())
        x = x * 10 + c - '0';
}

constexpr bool typetest = 0;
constexpr int N = 2e3 + 5;
constexpr ll Inf = 1e17;

struct Object
{
    int c, f, v;
    bool seller;

    bool operator<(const Object &a) const
    {
        return f < a.f || (f == a.f && !seller && a.seller);
    }
} a[N * 2];

ll dp[N * 50];

int n, m;

void Read()
{
    cin >> n;
    for (int i = 1; i <= n; ++i)
    {
        cin >> a[i].c >> a[i].f >> a[i].v;
        a[i].seller = 1;
    }

    cin >> m;

    for (int i = n + 1; i <= n + m; ++i)
        cin >> a[i].c >> a[i].f >> a[i].v;
}

inline void Max(ll &x, ll y)
{
    if (x < y)
        x = y;
}

void Solve()
{
    sort(a + 1, a + m + n + 1);

    fill_n(dp, N * 50, -Inf);
    dp[0] = 0;

    for (int i = 1, cnt(0); i <= m + n; ++i)
    {
        if (a[i].seller)
        {
            for (int j = 0; j <= cnt; ++j)
                Max(dp[max(0, j - a[i].c)], dp[j] - a[i].v);
        }
        else
        {
            for (int j = cnt; ~j; --j)
                Max(dp[j + a[i].c], dp[j] + a[i].v);
            cnt += a[i].c;
        }
    }

    cout << dp[0];
}

int32_t main()
{
    ios::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    if (fopen("xor.INP", "r"))
    {
        freopen("xor.inp", "r", stdin);
        freopen("xor.out", "w", stdout);
    }
    int t(1);
    if (typetest)
        cin >> t;
    for (int _ = 1; _ <= t; ++_)
    {
        // cout << "Case #" << _ << ": ";
        Read();
        Solve();
    }
    // cerr << "\nTime elapsed: " << 1000 * clock() / CLOCKS_PER_SEC << "ms\n";
}

Compilation message (stderr)

clo.cpp: In function 'void read(T&)':
clo.cpp:12:18: warning: ISO C++17 does not allow 'register' storage class specifier [-Wregister]
   12 |     register int c;
      |                  ^
clo.cpp: In function 'int32_t main()':
clo.cpp:91:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   91 |         freopen("xor.inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
clo.cpp:92:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   92 |         freopen("xor.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