Submission #148942

#	Time	Username	Problem	Language	Result	Execution time	Memory
148942		JeffreyHo (#200)	Crosses on the Grid (FXCUP4_cross)	C++17	0 / 100	7 ms	1968 KiB

cross

#include "cross.h"
#include <bits/stdc++.h>
using namespace std;

long long SelectCross(int k, std::vector<int> a, std::vector<int> b) {
	int n = (int)a.size();
    pair<int, int> c[200005] = {};
    for (int i = 0; i < n; i++) c[i] = {b[i], a[i]};
    sort(c, c + n); reverse(c, c + n);
    multiset<int> s;
    for (int i = 0; i < k; i++) s.insert(c[i].second);
    long long z = 1ll * c[k - 1].first * c[k - 1].first - 1ll * *s.rbegin() * *s.rbegin();
    for (int i = k; i < n; i++) {
        s.insert(c[i].second);
        s.erase(s.find(*s.rbegin()));
        z = max(z, 1ll * c[i].first * c[i].first - 1ll * *s.rbegin() * *s.rbegin());
    }
	return z;
}

• Subtask 1: 0 / 8
• Subtask 2: 0 / 55
• Subtask 3: 0 / 37