Submission #764272

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
764272	2023-06-23 09:50:03	idkhandle	Crosses on the Grid (FXCUP4_cross)	C++17	100 / 100	106 ms	18152 KiB

cross

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#include "cross.h"
#include <bits/stdc++.h>
using namespace std;
using pii = pair<int, int>;
using ll = long long;
const int INF = 1e9;
ll SelectCross(int K, vector<int> I, vector<int> O) {
  int n = I.size();
  vector<pii> a;
  for (int i = 0; i < n; i++) {
    a.emplace_back(I[i], O[i]);
  }
  sort(a.begin(), a.end());
  multiset<int> st;
  ll ans = 0;
  for (int i = n - 1; i >= 0; i--) {
    if (st.size() >= K - 1) {
      ans = max(ans, a[i].first * (2LL * min((K == 1 ? INF : *st.begin()), a[i].second) - a[i].first));
      st.insert(a[i].second);
      st.erase(st.begin());
    }
    else {
      st.insert(a[i].second);
    }
  }
  return ans;
 
 
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Compilation message (stderr)

cross.cpp: In function 'll SelectCross(int, std::vector<int>, std::vector<int>)':
cross.cpp:21:17: warning: comparison of integer expressions of different signedness: 'std::multiset<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   21 |   if (st.size() >= K - 1) {
      |       ~~~~~~~~~~^~~~~~~~

• Subtask 1: 8 / 8
• Subtask 2: 55 / 55
• Subtask 3: 37 / 37