Submission #976166

#	Time	Username	Problem	Language	Result	Execution time	Memory
976166		vjudge1	Knapsack (NOI18_knapsack)	C++11	12 / 100	1000 ms	7156 KiB

knapsack

#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define vi vector<int>
#define pb push_back

struct informasi
{
    ll v, w, stock;
};

int main()
{
    ll s, n;
    cin >> s >> n;
    vector<informasi> v(n);
    for (ll i = 0; i < n; i++)
    {
        cin >> v[i].v >> v[i].w >> v[i].stock;
    }

    vector<pair<ll, ll>> dp[n + 1];
    dp[0].pb({s, 0});
    set<ll> has[n + 1];
    for (ll i = 1; i <= n; i++)
    {
        for (auto j : dp[i - 1])
        {
            ll cnt = 0;

            for (ll w = j.first; w >= max(0LL, j.first - v[i - 1].stock * v[i - 1].w); w -= v[i - 1].w)
            {

                if (!has[i].count(w))
                {
                    dp[i].pb({w, j.second + cnt * v[i - 1].v});
                    has[i].insert(w);
                }
                else
                {
                    ll l = 0, r = dp[i].size() - 1;
                    while (l < r)
                    {
                        ll mid = (l + r) / 2;
                        if (dp[i][mid].first == w)
                        {
                            ll incremeter = j.second + cnt * v[i - 1].v;
                            dp[i][mid].second = max(dp[i][mid].second, incremeter);
                            break;
                        }
                        else if (dp[i][mid].first < w)
                            l = mid;
                        else
                            r = mid;
                    }
                }
                sort(dp[i].begin(), dp[i].end());

                cnt++;
            }
        }
    }
    ll ans = 0;
    for (auto i : dp[n])
    {
        ans = max(ans, i.second);
    }
    cout << ans;
}

• Subtask 1: 12 / 12
• Subtask 2: 0 / 17
• Subtask 3: 0 / 20
• Subtask 4: 0 / 24
• Subtask 5: 0 / 27