답안 #1087406

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1087406	2024-09-12T15:46:58 Z	Octa_pe_info	Mobile (BOI12_mobile)	C++14	100 / 100	361 ms	35408 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	실행 시간	메모리	Grader output
1	Correct	1 ms	348 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	1 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct

Subtask #2
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	348 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct

Subtask #3
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	348 KB	Output is correct
2	Correct	1 ms	348 KB	Output is correct
3	Correct	1 ms	348 KB	Output is correct
4	Correct	1 ms	348 KB	Output is correct

Subtask #4
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	348 KB	Output is correct
2	Correct	2 ms	604 KB	Output is correct
3	Correct	2 ms	344 KB	Output is correct
4	Correct	2 ms	604 KB	Output is correct

Subtask #5
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	348 KB	Output is correct
2	Correct	2 ms	604 KB	Output is correct
3	Correct	2 ms	344 KB	Output is correct
4	Correct	2 ms	604 KB	Output is correct

Subtask #6
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	344 KB	Output is correct
2	Correct	2 ms	600 KB	Output is correct
3	Correct	2 ms	472 KB	Output is correct
4	Correct	2 ms	604 KB	Output is correct
5	Correct	3 ms	576 KB	Output is correct

Subtask #7
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	29 ms	2392 KB	Output is correct
2	Correct	19 ms	2648 KB	Output is correct
3	Correct	13 ms	1880 KB	Output is correct
4	Correct	38 ms	2648 KB	Output is correct
5	Correct	12 ms	1628 KB	Output is correct

Subtask #8
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	19 ms	2396 KB	Output is correct
2	Correct	32 ms	2140 KB	Output is correct
3	Correct	30 ms	2732 KB	Output is correct
4	Correct	24 ms	2652 KB	Output is correct
5	Correct	28 ms	3164 KB	Output is correct

Subtask #9
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	20 ms	2396 KB	Output is correct
2	Correct	28 ms	2652 KB	Output is correct
3	Correct	31 ms	2648 KB	Output is correct
4	Correct	34 ms	3924 KB	Output is correct
5	Correct	23 ms	2764 KB	Output is correct

Subtask #10
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	36 ms	3356 KB	Output is correct
2	Correct	24 ms	3428 KB	Output is correct
3	Correct	23 ms	3056 KB	Output is correct
4	Correct	34 ms	3928 KB	Output is correct
5	Correct	46 ms	3260 KB	Output is correct

Subtask #11
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	25 ms	3416 KB	Output is correct
2	Correct	28 ms	3424 KB	Output is correct
3	Correct	24 ms	3056 KB	Output is correct
4	Correct	31 ms	3832 KB	Output is correct
5	Correct	28 ms	3160 KB	Output is correct

Subtask #12
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	108 ms	12388 KB	Output is correct
2	Correct	124 ms	15952 KB	Output is correct
3	Correct	120 ms	15440 KB	Output is correct
4	Correct	156 ms	17784 KB	Output is correct
5	Correct	169 ms	14932 KB	Output is correct

Subtask #13
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	125 ms	16444 KB	Output is correct
2	Correct	185 ms	14744 KB	Output is correct
3	Correct	115 ms	13980 KB	Output is correct
4	Correct	150 ms	17492 KB	Output is correct
5	Correct	143 ms	15444 KB	Output is correct

Subtask #14
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	128 ms	14796 KB	Output is correct
2	Correct	154 ms	18936 KB	Output is correct
3	Correct	145 ms	18376 KB	Output is correct
4	Correct	186 ms	21844 KB	Output is correct
5	Correct	183 ms	17744 KB	Output is correct

Subtask #15
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	146 ms	19668 KB	Output is correct
2	Correct	221 ms	17740 KB	Output is correct
3	Correct	164 ms	16588 KB	Output is correct
4	Correct	187 ms	21332 KB	Output is correct
5	Correct	171 ms	18512 KB	Output is correct

Subtask #16
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	183 ms	17232 KB	Output is correct
2	Correct	173 ms	22100 KB	Output is correct
3	Correct	183 ms	21496 KB	Output is correct
4	Correct	215 ms	24956 KB	Output is correct
5	Correct	209 ms	20304 KB	Output is correct

Subtask #17
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	184 ms	22844 KB	Output is correct
2	Correct	256 ms	20552 KB	Output is correct
3	Correct	166 ms	19716 KB	Output is correct
4	Correct	220 ms	24888 KB	Output is correct
5	Correct	198 ms	21296 KB	Output is correct

Subtask #18
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	167 ms	19796 KB	Output is correct
2	Correct	194 ms	25172 KB	Output is correct
3	Correct	186 ms	24352 KB	Output is correct
4	Correct	257 ms	28500 KB	Output is correct
5	Correct	219 ms	24116 KB	Output is correct

Subtask #19
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	196 ms	25936 KB	Output is correct
2	Correct	284 ms	23376 KB	Output is correct
3	Correct	188 ms	22356 KB	Output is correct
4	Correct	252 ms	28504 KB	Output is correct
5	Correct	222 ms	24400 KB	Output is correct

Subtask #20
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	212 ms	24660 KB	Output is correct
2	Correct	246 ms	31572 KB	Output is correct
3	Correct	247 ms	30548 KB	Output is correct
4	Correct	322 ms	35156 KB	Output is correct
5	Correct	278 ms	29428 KB	Output is correct

Subtask #21
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	275 ms	32444 KB	Output is correct
2	Correct	361 ms	29268 KB	Output is correct
3	Correct	237 ms	28164 KB	Output is correct
4	Correct	321 ms	35408 KB	Output is correct
5	Correct	285 ms	30744 KB	Output is correct

답안 #1087406

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