Submission #1127699

#	Time	Username	Problem	Language	Result	Execution time	Memory
1127699		eirinayukari	Knapsack (NOI18_knapsack)	C++20	73 / 100	1093 ms	2628 KiB

knapsack

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
#define int long long
const int maxn = 5000;
const int mod = 998244353;

void add_self(int &a, int b) {
    a += b;
    if(a >= mod) a -= mod;
}

void sub_self(int &a, int b) {
    a -= b;
    if(a < 0) a += mod;
}

int n, s;
vector<tuple<int, int, int>> items;

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

    cin >> s >> n;
    items.resize(n);
    for(auto &[v, w, c] : items) {
        cin >> v >> w >> c;
    }

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

    for(auto [v, w, c] : items) {
        for(int k = 1; c > 0; k *= 2) {
            int take = min(k, c);
            ll new_w = take * w;
            ll new_v = take * v;

            for(int i = s; i >= new_w; i--) {
                dp[i] = max(dp[i], dp[i - new_w] + new_v);
            }

            c -= take;
        }
    }

    cout << *max_element(dp.begin(), dp.end()) << '\n';
}

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