Submission #533642

#	Time	Username	Problem	Language	Result	Execution time	Memory
533642		900iqNoobie	Knapsack (NOI18_knapsack)	C++17	49 / 100	145 ms	262148 KiB

knapsack

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef long double ld;
int const mod=998244353;
ll dp[20002][2002];
int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    int t=1;
    //cin>>t;
    while (t--){
        int n,s,w,k;
        ll va;
        cin>>s>>n;
        if (n==1){
            cin>>va>>w>>k;
            cout<<va*(min(k,s/w))<<"\n";
            continue;
        }
        vector <pair<ll,int>> v;
        v.push_back({(ll)0,0});
        for (int i=0;i<n;i++){
            cin>>va>>w>>k;
            k=min(k,2000);
            while (k--) v.push_back({va,w});
        }
        dp[0][0]=0;
        for (int i=1;i<v.size();i++){
            for (int j=0;j<=s;j++){
                dp[i][j]=dp[i-1][j];
                if ((v[i].second)<=j) dp[i][j]=max(dp[i][j],dp[i-1][j-(v[i].second)]+(v[i].first));
            }
        }
        cout<<dp[v.size()-1][s]<<"\n";
    }
    return 0;
}

Compilation message (stderr)

knapsack.cpp: In function 'int main()':
knapsack.cpp:29:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long long int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   29 |         for (int i=1;i<v.size();i++){
      |                      ~^~~~~~~~~

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