Submission #1304098

#	Time	Username	Problem	Language	Result	Execution time	Memory
1304098		Zone_zonee	Knapsack (NOI18_knapsack)	C++20	37 / 100	2 ms	576 KiB

knapsack

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
const int N = 1e5+10, S = 2e4+10;

ll dp[S];
pair<int, int> a[N*32];
int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    int s, n;
    cin >> s >> n;
    int sz = 0;
    for(int i = 1; i <= n; ++i){
        int v, w, k;
        cin >> v >> w >> k;
        for(int j = 0; k > 0; ++j){
            a[sz++] = {w*min(k, 1<<j), v*min(k, 1<<j)};
            k -= (1<<j);
        }
    }
    for(int j = 0; j < sz; ++j){
        auto [w, v] = a[j];
        for(int i = s; i >= w; --i){
            dp[i] = max(dp[i], dp[i-w] + v);
        }
    }
    cout << dp[s] << '\n';
}

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