Submission #1327890

#	Time	Username	Problem	Language	Result	Execution time	Memory
1327890		ghunglt	Knapsack (NOI18_knapsack)	C++20	73 / 100	1094 ms	15852 KiB

knapsack

#include <algorithm>
#include <bits/stdc++.h>
#include <cctype>
using namespace std;

#define name "king2."
#define ll long long
#define vi vector<int>

const int N=1e7+5, mod=998244353, S=2005;
int n, s;
ll dp[S], w[N], v[N];

int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
    
    //freopen(name "in","r",stdin);
    //freopen(name "out","w",stdout);

    cin>>s>>n;
    int cnt=0;
    for (int i=1;i<=n;i++){
        ll a,b,c;
        cin>>a>>b>>c;
        
        int k=1;
        while (c>=k){
            cnt++;
            v[cnt]=a*k;
            w[cnt]=b*k;
            c-=k;

            k*=2;
        }
        if (c>0){
            cnt++;
            v[cnt]=a*c;
            w[cnt]=b*c;
        }
    }

    for (int i=1;i<=cnt;i++){
        for (int j=s;j>=w[i];j--) dp[j]=max(dp[j],dp[j-w[i]]+v[i]);
    }

    cout<<dp[s];
    
    return 0;
}

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