Submission #934467

#	Time	Username	Problem	Language	Result	Execution time	Memory
934467		tnknguyen_	Knapsack (NOI18_knapsack)	C++14	73 / 100	1038 ms	18876 KiB

knapsack

#include <bits/stdc++.h>
using namespace std;
#define endl '\n' 
#define pll pair<long long, long long>

const int sz = 1e6 + 5;
vector<pll> a;
long long f[sz];
long long s, n;

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

    //freopen("main.inp","r",stdin);
    //freopen("main.out","w",stdout);

    cin>>s>>n;

    for(int i=1;i<=n;++i){
        long long v, w, k, p=1;
        cin>>v>>w>>k;

        while(p <= k){
            k -= p;
            a.push_back({v*p, w*p});
            p *= 2;
        }
        if(k > 0){
            a.push_back({v*k, w*k});
        }
    }

    for(int i=0;i<a.size();++i){
        for(int j=s;j>=a[i].second;--j){
            f[j] = max(f[j], f[j - a[i].second] + a[i].first);
        }
    }

    cout<<f[s];

    return 0;
}

Compilation message (stderr)

knapsack.cpp: In function 'int main()':
knapsack.cpp:35:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   35 |     for(int i=0;i<a.size();++i){
      |                 ~^~~~~~~~~

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