Submission #1044387

#	Time	Username	Problem	Language	Result	Execution time	Memory
1044387		sanatp977	Knapsack (NOI18_knapsack)	C++17	100 / 100	36 ms	2976 KiB

knapsack

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

int main(){
    ios::sync_with_stdio(0); cin.tie(0);
    int s,n; cin>>s>>n;
    vector<pair<int,int>>arr[2001];
    for(int i=0;i<n;i++){
        int v,w; ll k;
        cin>>v>>w>>k;
        arr[w].push_back({v,k});
    }
    ll dp[2001]; memset(dp,0,sizeof dp); ll ans = 0;
    for(int i=1;i<=s;i++){
        sort(arr[i].begin(),arr[i].end(),greater<pair<int,ll>>());
        int index = 0;
        for(int j=0;j<s/i;j++){
            if(index>=arr[i].size())break;
            for(int x=s;x>=i;x--){
                dp[x]=max(dp[x],dp[x-i]+arr[i][index].first);
                ans=max(ans,dp[x]);
            }
            arr[i][index].second-=1;
            if(arr[i][index].second==0)index++;
        }
    }
    cout<<ans<<"\n";
}

Compilation message (stderr)

knapsack.cpp: In function 'int main()':
knapsack.cpp:19:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   19 |             if(index>=arr[i].size())break;
      |                ~~~~~^~~~~~~~~~~~~~~

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