Submission #921325

#	Time	Username	Problem	Language	Result	Execution time	Memory
921325		JoksimKaktus	Kisik (COCI19_kisik)	C++17	90 / 90	1022 ms	73016 KiB

kisik

#include <bits/stdc++.h>

using namespace std;
using ll = long long;
void output(bool yes){yes ? cout << "Yes" << "\n" : cout << "No" << "\n";}


int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(0);
    int n,k;
    cin >> n >> k;
    vector <pair<ll,ll>> v(n);
    for(int i = 0;i < n;i++){
        cin >> v[i].second >> v[i].first;
    }
    std::sort(v.begin(), v.end());
    multiset <ll> ml;
    ll sum = 0;
    for(int i = 0;i < k;i++){
        ml.insert(v[i].second);
        sum += v[i].second;
    }
    ll res = sum * v[k-1].first;
    auto it = ml.end();
    it--;
    for(int i = k;i < n;i++){
        if(v[i].second < *it){
            sum = sum + v[i].second - *it;
            ml.insert(v[i].second);
            it--;
            res = min(res,sum * v[i].first);
        }
    }
    cout << res << "\n";
}

• Subtask 1: 10 / 10
• Subtask 2: 10 / 10
• Subtask 3: 10 / 10
• Subtask 4: 10 / 10
• Subtask 5: 10 / 10
• Subtask 6: 10 / 10
• Subtask 7: 10 / 10
• Subtask 8: 10 / 10
• Subtask 9: 10 / 10