Submission #1210674

#	Time	Username	Problem	Language	Result	Execution time	Memory
1210674		ASGA_RedSea	Knapsack (NOI18_knapsack)	C++20	29 / 100	8 ms	652 KiB

knapsack

/**

                                    * بسم الله الرحمن الرحيم *

                ﴾ رَبِّ اشْرَحْ لِي صَدْرِي * وَيَسِّرْ لِي أَمْرِي * وَاحْلُلْ عُقْدَةً مِّن لِّسَانِي * يَفْقَهُوا قَوْلِي ﴿

*/

/// author : "ASGA"


#pragma GCC optimize("Ofast")

#include<bits/stdc++.h>


using namespace std;
using ll=long long;





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


    int s,n;cin>>s>>n;
    vector<ll>d(s+1,0);

    while(n--){
        ll v,w,k;cin>>v>>w>>k;
        k=min(k,s/w);

        vector<multiset<ll>>a(w);

        vector<ll>vv(s+1,0);
        for(int i=0;i<=s;i++){
            vv[i]=v*((s-i+w)/w);
        }

        for(int i=s;i>=0;i--){
            ll sz=a[i%w].size();
            if(sz<k)a[i%w].insert(d[i]+vv[i]);
        }


        vector<ll>cnt(w,0);

        for(int i=s;i>=w;i--){
            a[i%w].erase(a[i%w].find(d[i]+vv[i]));
            if(i>=w*k){a[i%w].insert(d[i-w*k]+vv[i-w*k]);cnt[i%w]+=v;}

            ll val=*a[i%w].rbegin()-cnt[i%w];

            d[i]=max(d[i],val);
        }
    }

    cout<<*max_element(d.begin(),d.end());


    return 0;
}

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