Submission #149567

#	Time	Username	Problem	Language	Result	Execution time	Memory
149567		dragoon (#200)	Crosses on the Grid (FXCUP4_cross)	C++17	100 / 100	129 ms	6888 KiB

cross

#include "cross.h"
#include <utility>
#include <queue>
#include <algorithm>
using namespace std;

priority_queue<int> PQ;
vector<pair<int, int>> V;

long long SelectCross(int K, std::vector<int> I, std::vector<int> O) {
	int n = I.size();
	for (int i = 0; i < n; i++) {
		V.push_back({I[i], O[i]});
	}
	sort(V.begin(), V.end());
	reverse(V.begin(), V.end());
	for (int i = 0; i < K - 1; i++) {
		PQ.push(-V[i].second);
	}
	long long ret = 0;
	for (int i = K - 1; i < n; i++) {
		PQ.push(-V[i].second);
		if (PQ.size() > K) PQ.pop();
		long long o = -PQ.top();
		long long in = V[i].first;
		long long now = 2 * o * in - in * in;
		if (now > ret) ret = now;
	}
	return ret;
}

Compilation message (stderr)

cross.cpp: In function 'long long int SelectCross(int, std::vector<int>, std::vector<int>)':
cross.cpp:23:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   if (PQ.size() > K) PQ.pop();
       ~~~~~~~~~~^~~

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