oj.uz

답안 #1042243

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1042243 2024-08-02T17:26:55 Z sssamui Mobile (BOI12_mobile) C++17
0 / 100
 663 ms 35164 KB 
#include <iostream>
#include <cstdio>
#include <vector>
#include <cmath>
#include <stack>
#include <iomanip>
using namespace std;

int main()
{
	ios::sync_with_stdio(false);
	cin.tie(nullptr);

	int n;
	double L;
	cin >> n >> L;
	vector<pair<double, double>> xy(n);
	for (int i = 0; i < n; i++) cin >> xy[i].first >> xy[i].second;

	double l = 0, r = 4e9;
	int it = 45;
	while (it--)
	{
		double m = (l + r) / 2;
		stack<pair<double, double>> c;
		for (int i = 0; i < n; i++) if (xy[i].second <= m)
		{
			double sq = sqrt(m * m - xy[i].second * xy[i].second);
			double a = fmax(0, xy[i].first - sq), b = fmin(L, xy[i].first + sq);
			while (!c.empty() && (c.top().second >= a))
			{
				a = fmin(a, c.top().first), b = fmax(b, c.top().second);
				c.pop();
			}

			c.push({ a, b });
		}

		if ((c.size() != 1) || ((c.top().first > 0) || (c.top().second < L))) l = m;
		else r = m;
	}

	cout << fixed << setprecision(3) << l;
}

Subtask #1
0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 0 ms 348 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 0 ms 348 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 2 ms 348 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 3 ms 344 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 3 ms 348 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 4 ms 540 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #7
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 45 ms 1628 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #8
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 47 ms 1628 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #9
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 50 ms 1624 KB Output is correct
2 Correct 50 ms 1628 KB Output is correct
3 Correct 45 ms 1628 KB Output is correct
4 Incorrect 66 ms 3924 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #10
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 60 ms 1884 KB Output is correct
2 Correct 61 ms 1880 KB Output is correct
3 Correct 56 ms 1884 KB Output is correct
4 Incorrect 72 ms 3920 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #11
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 66 ms 2132 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #12
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 305 ms 8280 KB Output is correct
2 Correct 334 ms 8280 KB Output is correct
3 Correct 340 ms 8284 KB Output is correct
4 Incorrect 320 ms 8284 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #13
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 306 ms 8284 KB Output is correct
2 Incorrect 303 ms 8808 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #14
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 355 ms 9820 KB Output is correct
2 Correct 369 ms 9820 KB Output is correct
3 Correct 367 ms 9820 KB Output is correct
4 Incorrect 454 ms 9820 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #15
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 369 ms 9816 KB Output is correct
2 Incorrect 376 ms 10576 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #16
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 410 ms 11356 KB Output is correct
2 Correct 443 ms 11356 KB Output is correct
3 Correct 438 ms 11352 KB Output is correct
4 Incorrect 460 ms 11356 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #17
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 432 ms 11356 KB Output is correct
2 Incorrect 429 ms 12372 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #18
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 475 ms 13144 KB Output is correct
2 Correct 503 ms 12892 KB Output is correct
3 Correct 508 ms 12888 KB Output is correct
4 Incorrect 539 ms 12892 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #19
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 493 ms 12888 KB Output is correct
2 Incorrect 520 ms 13904 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #20
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 601 ms 15960 KB Output is correct
2 Correct 630 ms 15960 KB Output is correct
3 Correct 640 ms 15964 KB Output is correct
4 Incorrect 663 ms 35164 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #21
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 634 ms 15964 KB Output is correct
2 Incorrect 606 ms 17488 KB Output isn't correct
3 Halted 0 ms 0 KB -