Submission #860754

#	Time	Username	Problem	Language	Result	Execution time	Memory
860754		noyancanturk	Knapsack (NOI18_knapsack)	C++17	100 / 100	39 ms	3040 KiB

knapsack

#ifndef Local
    #pragma GCC optimize("O3,unroll-loops")
#endif
#include <bits/stdc++.h>
#define int long long
#define pb push_back
#define lim 100000
using namespace std;
const int mod=1000000007ll;

void solve(){
    int s,n;
    cin>>s>>n;
    priority_queue<pair<int,int>>weight[s+1];
    for(int i=0;i<n;i++){
        int v,w,k;
        cin>>v>>w>>k;
        weight[w].push({v,k});
    }
    int dp[s+1];
    memset(dp,0,sizeof(dp));
    for(int i=1;i<=s;i++){
        int cani=s/i,j=0;
        while(cani&&weight[i].size()){
            auto p=weight[i].top();
            weight[i].pop();
            int to=min(p.second,cani);
            for(int rep=0;rep<to;rep++){
                for(int j=s-i;0<=j;j--){
                    dp[j+i]=max(dp[j+i],dp[j]+p.first);
                }
            }
            cani-=to;
        }
    }
    cout<<*max_element(dp,dp+s+1);
}

signed main(){
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);cout.tie(NULL);
#ifdef Local  
    freopen(".in","r",stdin);
    freopen(".out","w",stdout);
#endif
    int t=1;
    //cin>>t;
    while (t--)
    {
        solve();
    }
}

Compilation message (stderr)

knapsack.cpp: In function 'void solve()':
knapsack.cpp:23:22: warning: unused variable 'j' [-Wunused-variable]
   23 |         int cani=s/i,j=0;
      |                      ^

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