Submission #856566

#	Time	Username	Problem	Language	Result	Execution time	Memory
856566		bob123	Knapsack (NOI18_knapsack)	C++17	73 / 100	234 ms	262144 KiB

knapsack

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

int main()
{
    ll s,n;
    cin>>s>>n;
    vector<ll>ws;
    vector<ll>vs;
    vector<ll>vk;
    vk.push_back(0);
    vs.push_back(0);
    ws.push_back(0);
    for(ll i=0;i<n;i++){
        ll v,w,k;
        cin>>v>>w>>k;
        ws.push_back(w);
        vs.push_back(v);
        vk.push_back(k);
    }
    vector<vector<ll>>dp(s+1,vector<ll>(n+1,0));
    for(ll j=1;j<=s;j++){
        for(int i=1;i<=n;i++){
            for(int k=1;k<=vk[i];k++){
                if(j>=(k*ws[i])){
                    dp[j][i]=max(dp[j][i],dp[j-(k*ws[i])][i-1]+(vs[i]*k));
                }else{
                    break;
                }
            }
            dp[j][i]=max(dp[j][i],dp[j][i-1]);
        }
    }
    cout<<dp[s][n]<<endl;
    return 0;
}
/*
20 3 
5000 15 1
100 1 3 
50 1 4 
*/

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