Submission #780786

#	Time	Username	Problem	Language	Result	Execution time	Memory
780786		makanhulia	Knapsack (NOI18_knapsack)	C++17	73 / 100	124 ms	262144 KiB

knapsack

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
#define fi first
#define se second
#define pb push_back
#define TC int t; cin>>t; while(t--)
#define all(x) (x).begin(),(x).end()
//*AC BERSAMA ALLAH  FORTIS FORTUNA ADIUVAT


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

    int energi,tipe;
    cin>>energi>>tipe;
    vector<pair<pair<ll,ll>,ll > > v(tipe+1);
    ll dp[tipe+1][energi+1]; memset(dp,0,sizeof(dp));

    for(int i=1;i<=tipe;i++){
        ll l,e,k;
        cin>>l>>e>>k;
        v[i]=make_pair(make_pair(l,e),k); // luas, energi, kuantiti
    }

    for(int i=1;i<=tipe;i++){
        for(int j=1;j<=energi;j++){
            dp[i][j]=dp[i-1][j];
            ll kuant=v[i].se, en=v[i].fi.se;
            if(kuant>2000) kuant=2000;
            for(int k=1;k<=kuant;k++){
                if(j>=en*k){
                    if(dp[i-1][j-k*en]+k*v[i].fi.fi>dp[i][j]){
                        dp[i][j]=dp[i-1][j-k*en]+k*v[i].fi.fi;
                    }
                }
                else break;
            }
        }
    }
    cout<<dp[tipe][energi]<<'\n';


    return 0;
}

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