Submission #932460

#	Time	Username	Problem	Language	Result	Execution time	Memory
932460		ironic	Knapsack (NOI18_knapsack)	C++17	49 / 100	203 ms	262144 KiB

knapsack

#include <bits/stdc++.h>


using namespace std;
using ll = long long;

void solve(){
    int s, n; cin >> s >> n;
    vector<int> W, V;
    ll v, w, r;
    if(n==1){
        cin >> v >> w >> r;
        
        cout << min(s/w, r) * v << '\n';
        return;
    }
    for(int i = 0; i<n; i++){
        cin >> v >> w >> r;
        while(r--){
            W.push_back(w);
            V.push_back(v);
        }
    }

    n = W.size();

    int a[s+1]{};
    fill(a, a+s+1, -1e9);
    a[0] = 0;

    for(int i = 0; i<n; i++){
        for(int j = s; j>=W[i]; j--){
            a[j] = max(a[j], a[j-W[i]] + V[i]);
        }
    }
    int best = 0;
    for(int i = 0; i<=s; i++) best = max(best, a[i]);
    cout << best << '\n';
}


signed main()
{
    // #ifndef LOCAL
    //   freopen(".in","r",stdin);
    //   freopen(".out","w",stdout); 
    // #endif

    ios_base::sync_with_stdio(0); cin.tie(0);
    int t = 1;
    // cin >> t;
    while(t--) solve();
}

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