답안 #670281

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
670281	2022-12-08T14:38:31 Z	RadicaI	Mobile (BOI12_mobile)	C++17	100 / 100	392 ms	35276 KB

mobile

#include <bits/stdc++.h>
#define x first
#define y second
using namespace std;

pair<long long, long long> p[1000000];

int main() {
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	int n, len;
	cin >> n >> len;
	for (int i = 0; i < n; i++) cin >> p[i].x >> p[i].y;

	double l = 1, r = 1.5e9;
	while (r - l > 1e-3) {
		double mid = (l + r) / 2, curr = 0;
		for (int i = 0; i < n; i++) {
			double delta = sqrt(mid * mid - p[i].y * p[i].y);
			double a = p[i].x - delta, b = p[i].x + delta;
			if (a <= curr) curr = max(curr, b);
		}

		if (curr >= len) r = mid;
		else l = mid;
	}

	cout << fixed << setprecision(4) << l;
	return 0;
}

Subtask #1
4.0 / 4.0

#	결과	메모리	Grader output
1	Correct	212 KB	Output is correct
2	Correct	212 KB	Output is correct
3	Correct	212 KB	Output is correct
4	Correct	212 KB	Output is correct

Subtask #2
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	0 ms	212 KB	Output is correct
3	Correct	0 ms	212 KB	Output is correct
4	Correct	1 ms	212 KB	Output is correct

Subtask #3
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	340 KB	Output is correct
2	Correct	1 ms	340 KB	Output is correct
3	Correct	1 ms	340 KB	Output is correct
4	Correct	1 ms	340 KB	Output is correct

Subtask #4
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	340 KB	Output is correct
2	Correct	2 ms	340 KB	Output is correct
3	Correct	1 ms	340 KB	Output is correct
4	Correct	2 ms	340 KB	Output is correct

Subtask #5
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	340 KB	Output is correct
2	Correct	2 ms	340 KB	Output is correct
3	Correct	2 ms	340 KB	Output is correct
4	Correct	2 ms	340 KB	Output is correct

Subtask #6
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	340 KB	Output is correct
2	Correct	2 ms	340 KB	Output is correct
3	Correct	1 ms	340 KB	Output is correct
4	Correct	2 ms	340 KB	Output is correct
5	Correct	2 ms	340 KB	Output is correct

Subtask #7
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	27 ms	1492 KB	Output is correct
2	Correct	23 ms	1576 KB	Output is correct
3	Correct	20 ms	1168 KB	Output is correct
4	Correct	36 ms	1384 KB	Output is correct
5	Correct	13 ms	1112 KB	Output is correct

Subtask #8
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	21 ms	1492 KB	Output is correct
2	Correct	21 ms	1364 KB	Output is correct
3	Correct	25 ms	1604 KB	Output is correct
4	Correct	26 ms	1552 KB	Output is correct
5	Correct	30 ms	1680 KB	Output is correct

Subtask #9
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	19 ms	1704 KB	Output is correct
2	Correct	22 ms	1528 KB	Output is correct
3	Correct	21 ms	1560 KB	Output is correct
4	Correct	35 ms	1860 KB	Output is correct
5	Correct	29 ms	1700 KB	Output is correct

Subtask #10
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	27 ms	1872 KB	Output is correct
2	Correct	29 ms	3204 KB	Output is correct
3	Correct	26 ms	2792 KB	Output is correct
4	Correct	37 ms	3728 KB	Output is correct
5	Correct	32 ms	3128 KB	Output is correct

Subtask #11
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	27 ms	1876 KB	Output is correct
2	Correct	27 ms	1892 KB	Output is correct
3	Correct	26 ms	1832 KB	Output is correct
4	Correct	36 ms	1832 KB	Output is correct
5	Correct	31 ms	1796 KB	Output is correct

Subtask #12
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	113 ms	8132 KB	Output is correct
2	Correct	136 ms	8052 KB	Output is correct
3	Correct	145 ms	15260 KB	Output is correct
4	Correct	183 ms	17620 KB	Output is correct
5	Correct	162 ms	15052 KB	Output is correct

Subtask #13
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	143 ms	8136 KB	Output is correct
2	Correct	204 ms	8132 KB	Output is correct
3	Correct	126 ms	8012 KB	Output is correct
4	Correct	173 ms	8012 KB	Output is correct
5	Correct	154 ms	8048 KB	Output is correct

Subtask #14
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	139 ms	9648 KB	Output is correct
2	Correct	173 ms	9708 KB	Output is correct
3	Correct	173 ms	18404 KB	Output is correct
4	Correct	217 ms	21580 KB	Output is correct
5	Correct	187 ms	17568 KB	Output is correct

Subtask #15
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	166 ms	9676 KB	Output is correct
2	Correct	257 ms	17620 KB	Output is correct
3	Correct	162 ms	16480 KB	Output is correct
4	Correct	218 ms	21500 KB	Output is correct
5	Correct	208 ms	18416 KB	Output is correct

Subtask #16
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	163 ms	11252 KB	Output is correct
2	Correct	191 ms	11264 KB	Output is correct
3	Correct	192 ms	21448 KB	Output is correct
4	Correct	261 ms	24848 KB	Output is correct
5	Correct	227 ms	20196 KB	Output is correct

Subtask #17
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	193 ms	11228 KB	Output is correct
2	Correct	274 ms	11220 KB	Output is correct
3	Correct	178 ms	11168 KB	Output is correct
4	Correct	249 ms	11336 KB	Output is correct
5	Correct	217 ms	11268 KB	Output is correct

Subtask #18
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	179 ms	12836 KB	Output is correct
2	Correct	222 ms	12720 KB	Output is correct
3	Correct	223 ms	24384 KB	Output is correct
4	Correct	291 ms	28464 KB	Output is correct
5	Correct	257 ms	23980 KB	Output is correct

Subtask #19
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	230 ms	12748 KB	Output is correct
2	Correct	317 ms	23500 KB	Output is correct
3	Correct	212 ms	22384 KB	Output is correct
4	Correct	289 ms	28172 KB	Output is correct
5	Correct	258 ms	24396 KB	Output is correct

Subtask #20
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	221 ms	15928 KB	Output is correct
2	Correct	278 ms	15844 KB	Output is correct
3	Correct	276 ms	30492 KB	Output is correct
4	Correct	371 ms	35148 KB	Output is correct
5	Correct	325 ms	29512 KB	Output is correct

Subtask #21
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	279 ms	15908 KB	Output is correct
2	Correct	392 ms	29076 KB	Output is correct
3	Correct	271 ms	28236 KB	Output is correct
4	Correct	368 ms	35276 KB	Output is correct
5	Correct	333 ms	30688 KB	Output is correct

답안 #670281

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