Submission #1287869

#	Time	Username	Problem	Language	Result	Execution time	Memory
1287869		huseyncafarli	Knapsack (NOI18_knapsack)	C++20	73 / 100	1096 ms	2832 KiB

knapsack

#include <bits/stdc++.h>
#define ll long long
#define ld long double
#define pii pair<int, int>
#define pll pair<ll, ll>
#define vi vector<int>
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
#define nline '\n'
#define lsb(x) ((x) & -(x))
#define int ll
#define fastio ios_base::sync_with_stdio(0); cin.tie(0)
using namespace std;

const int sz = (int)1e5 + 5;
const int inf = 2e9 + 5;
const int mod1 = 1e9 + 7;
const int mod2 = 998244353;

int powmod(int n, int m, int mod) {
    int res = 1;
    while (m) {
        if (m & 1) res = 1ll * res * n % mod;
        n = 1ll * n * n % mod;
        m >>= 1;
    }
    return res;
}

struct Items {
    int v, w;
};

void solve() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    int s, n;
    cin >> s >> n;

    vector<int> v(n + 1), w(n + 1), k(n + 1);
    for (int i = 1; i <= n; i++)
        cin >> v[i] >> w[i] >> k[i];

    vector<int> dp(s + 1, 0);

    for (int i = 1; i <= n; i++) {
        int wi = w[i], val = v[i], num = k[i];

        for (int r = 0; r < wi; r++) {
            deque<pair<int, int>> dq;

            for (int j = r, cnt = 0; j <= s; j += wi, cnt++) {
                int cur = dp[j] - cnt * val;

                while (!dq.empty() && dq.front().first < cnt - num)
                    dq.pop_front();

                while (!dq.empty() && dq.back().second <= cur)
                    dq.pop_back();

                dq.push_back({cnt, cur});

                dp[j] = dq.front().second + cnt * val;
            }
        }
    }

    cout << dp[s] << '\n';
}

signed main() {
    fastio;
    int t = 1;
    // cin >> t;
    while (t--) {
        solve();
    }
}

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