Submission #1331931

#	Time	Username	Problem	Language	Result	Execution time	Memory
1331931		piolk	Knapsack (NOI18_knapsack)	C++20	37 / 100	1 ms	448 KiB

knapsack

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

int s,n;

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

    cin>>s>>n;

    vector<pair<int,int>> l;
    for (int i=0;i<n;i++){
        int v,w,k;
        cin>>v>>w>>k;
        
        int j=1;
        while (j<=k){
            l.push_back({j*v,j*w});
            k-=j;
            j<<=1;
        }

        if (k>0) l.push_back({k*v,k*w});
    }

    vector<long long> dp(s+7,-1); //max value with weight
    dp[0]=0;

    for (auto [v,w]:l){
        for (int i=s;i>=w;i--){
            if (dp[i-w]==-1) continue;
            dp[i]=max(dp[i],dp[i-w]+v);
        }
    }

    long long ans=0;
    for (int i=0;i<=s;i++) ans=max(ans,dp[i]);

    cout<<ans<<"\n";

    return 0;
}

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