Submission #1209400

#	Time	Username	Problem	Language	Result	Execution time	Memory
1209400		PenguinsAreCute	Road Construction (JOI21_road_construction)	C++17	6 / 100	184 ms	5544 KiB

road_construction

#include <bits/stdc++.h>
using namespace std;
int main() {
	int n, k;
	cin >> n >> k;
	int x[n], y[n];
	for(int i=0;i<n;i++)
		cin >> x[i] >> y[i];
	sort(x,x+n);
	int l=0, h=2e9; 
	while(h-l>1) {
		int m=(l+h)/2;
		long long cnt=0;
		int p = 0;
		for(int i=0;i<n;i++) {
			while(p<n&&x[p]-x[i]<=m)
				p++;
			cnt += (p - 1 - i);
		}
		if(cnt < k)
			l = m;
		else
			h = m;
	}
	vector<int> v;
	int p = 0;
	for(int i=0;i<n;i++) {
		while(p<n&&x[p]-x[i]<=h)
			p++;
		for(int j=i+1;j<p;j++)
			v.push_back(x[j]-x[i]);
	}
	sort(v.begin(),v.end());
	for(int i=0;i<k;i++)
		cout << v[i] << "\n";
}

• Subtask 1: 0 / 5
• Subtask 2: 6 / 6
• Subtask 3: 0 / 7
• Subtask 4: 0 / 20
• Subtask 5: 0 / 27
• Subtask 6: 0 / 35