Submission #1265284

#	Time	Username	Problem	Language	Result	Execution time	Memory
1265284		uzukishinobu	Knapsack (NOI18_knapsack)	C++20	73 / 100	1096 ms	16244 KiB

knapsack

#include <bits/stdc++.h>
#define int long long
using namespace std;
int f[5000000];
vector<int> w;
vector<int> v;

int a,b;

signed main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cin >> b >> a;
    for (int i=1;i<=a;i++){
         int x,y,t;
         cin >> y >> x >> t;
         t=min(b/x,t);
         int pow=1;
         while (t>=pow ){
             t-=pow;
             w.push_back(x*pow);
             v.push_back(y*pow);
             pow*=2;
         }
         if (t>0){
            w.push_back(x*t);
            v.push_back(y*t);
         }
    }
   // cout << w.size() << "\n";
    for (int i=0;i<w.size();i++){
         for (int j=b;j>=w[i];j--){
                 f[j]=max(f[j],v[i]+f[j-w[i]]);
               //  cout << f[j] << " ";
         }
         // cout << "\n";
    }
    cout << f[b];
    return 0;
}

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