Submission #711122

#	Time	Username	Problem	Language	Result	Execution time	Memory
711122		WonderfulWhale	Sure Bet (CEOI17_sure)	C++17	0 / 100	0 ms	212 KiB

sure

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

#define int int64_t
#define pb push_back
#define pii pair<int, int>
#define st first
#define nd second
#define all(x) (x).begin(), (x).end()
#define sz(x) (int)(x).size()

int32_t main() {
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);

	int n;
	cin >> n;
	vector<pair<double, double>> v1, v2;
	for(int i=0;i<n;i++) {
		double x, y;
		cin >> x >> y;
		v1.pb({-x, -y});
		v2.pb({-y, -x});
	}
	sort(all(v1));
	sort(all(v2));
	double ans = 0;
	double sum1 = 0;
	int cur = 0;
	double sum2 = 0;
	for(int i=0;i<=n;i++) {
		if(i) sum1 -= v1[i-1].st;
		while(cur!=n-1&&min(sum1, sum2-v2[cur].st)-i-cur-1>min(sum1, sum2)-i-cur) {
			sum2-=v2[cur].st;
			cur++;
		}
		ans = max(ans, min(sum1, sum2)-i-cur);
	}
	printf("%.4lf",(double)ans);
	cout << "\n";
}

• Subtask 1: 0 / 20
• Subtask 2: 0 / 40
• Subtask 3: 0 / 40