Submission #970712

#	Time	Username	Problem	Language	Result	Execution time	Memory
970712		54skyxenon	Knapsack (NOI18_knapsack)	C++17	12 / 100	1 ms	348 KiB

knapsack

// https://oj.uz/problem/view/NOI18_knapsack

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

#define int long long

int32_t main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);

    int s, n;
    cin >> s >> n;

    vector<tuple<int, int, int>> items;
    for (int i = 0; i < n; i++) {
        int v, w, k;
        cin >> v >> w >> k;
        items.push_back({v, w, k});
    }

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

    for (int i = 0; i <= n; i++) {
        for (int j = 0; j <= s; j++) {
            if (i == 0 || j == 0) {
                continue;
            }

            int opt = 0;

            for (int repeat = 1; repeat <= get<2>(items[i - 1]); repeat++) {
                int cost = repeat * get<1>(items[i - 1]);

                if (cost > j) {
                    break;
                }

                opt = max(opt, get<0>(items[i - 1]) * repeat + dp[i - 1][j - cost]);
            }

            dp[i][j] = opt;
        }
    }

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

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