Submission #123235

#	Time	Username	Problem	Language	Result	Execution time	Memory
123235		cvele	Kisik (COCI19_kisik)	C++14	80 / 90	2056 ms	60348 KiB

kisik

#include <iostream>
#include <sstream>
#include <cstdio>
#include <cstdlib>
#include <cmath>
#include <cctype>
#include <cstring>
#include <climits>
#include <iomanip>
#include <bitset>
#include <algorithm>
#include <vector>
#include <stack>
#include <queue>
#include <deque>
#include <set>
#include <list>
#include <map>

using namespace std;

#define int long long

const int N = 1000005;

int n, k;
vector < pair <int, int> > vec;
multiset <int> ms;

int32_t main() {
  cin >> n >> k;
  for (int i = 0; i < n; i++) {
    int w, h;
    cin >> w >> h;
    vec.push_back({h, w});
  }
  sort(vec.begin(), vec.end());
  int pos = 0;
  long long ans = 2e18, sum = 0;
  for (int i = 1; i < N; i++) {
    while (pos < vec.size() && vec[pos].first <= i) {
      sum += vec[pos].second;
      ms.insert(vec[pos].second);
      while (ms.size() > k) {
        sum -= *ms.rbegin();
        ms.erase(--ms.end());
      }
      pos++;
    }
    if (ms.size() == k) {
      ans = min(ans, 1ll * sum * i);
    }
  }
  cout << ans << endl;
  return 0;
}

Compilation message (stderr)

kisik.cpp: In function 'int32_t main()':
kisik.cpp:41:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     while (pos < vec.size() && vec[pos].first <= i) {
            ~~~~^~~~~~~~~~~~
kisik.cpp:44:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
       while (ms.size() > k) {
              ~~~~~~~~~~^~~
kisik.cpp:50:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     if (ms.size() == k) {
         ~~~~~~~~~~^~~~

• 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: 0 / 10
• Subtask 8: 10 / 10
• Subtask 9: 10 / 10