Submission #638017

#	Time	Username	Problem	Language	Result	Execution time	Memory
638017		zandler	Knapsack (NOI18_knapsack)	C++17	73 / 100	213 ms	752 KiB

knapsack

#include <bits/stdc++.h>
#define int long long
using namespace std;
int dp[2001]; // first i considered, j space taken
int c[2001];
int v[2001];
int k[2001];
int32_t main(){
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    int s, n; cin >> s >> n;
    for(int i=0;i<n;i++){
        cin >> v[i] >> c[i] >> k[i];
        k[i]=min(k[i], s/c[i]);
    }
    for(int i=0;i<n;i++){
        for(int j=s;j>=0;j--){
            for(int x=k[i]; x>=1; x--){
                if(j+x*c[i] <= s){
                    dp[j+x*c[i]]=max(dp[j+x*c[i]],dp[j]+v[i]*x);
                }

            }
        }
    
    }
    cout << *max_element(dp,dp+s+1) << '\n';
    return 0;
}

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