답안 #951912

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
951912	2024-03-23T00:45:04 Z	chuongdan	Mobile (BOI12_mobile)	C++14	100 / 100	381 ms	35172 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	1 ms	348 KB	Output is correct
3	Correct	1 ms	600 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	0 ms	344 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 #3
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	348 KB	Output is correct
2	Correct	2 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	344 KB	Output is correct
2	Correct	2 ms	604 KB	Output is correct
3	Correct	1 ms	348 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	2 ms	348 KB	Output is correct
2	Correct	2 ms	604 KB	Output is correct
3	Correct	2 ms	348 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	348 KB	Output is correct
2	Correct	2 ms	488 KB	Output is correct
3	Correct	2 ms	472 KB	Output is correct
4	Correct	3 ms	604 KB	Output is correct
5	Correct	2 ms	348 KB	Output is correct

Subtask #7
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	25 ms	3416 KB	Output is correct
2	Correct	20 ms	3768 KB	Output is correct
3	Correct	17 ms	3160 KB	Output is correct
4	Correct	23 ms	3676 KB	Output is correct
5	Correct	13 ms	2908 KB	Output is correct

Subtask #8
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	21 ms	3420 KB	Output is correct
2	Correct	22 ms	3420 KB	Output is correct
3	Correct	25 ms	3672 KB	Output is correct
4	Correct	24 ms	3676 KB	Output is correct
5	Correct	28 ms	3932 KB	Output is correct

Subtask #9
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	19 ms	3348 KB	Output is correct
2	Correct	21 ms	3676 KB	Output is correct
3	Correct	24 ms	3632 KB	Output is correct
4	Correct	33 ms	4440 KB	Output is correct
5	Correct	24 ms	3420 KB	Output is correct

Subtask #10
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	30 ms	4208 KB	Output is correct
2	Correct	26 ms	3928 KB	Output is correct
3	Correct	24 ms	3676 KB	Output is correct
4	Correct	32 ms	4444 KB	Output is correct
5	Correct	28 ms	3932 KB	Output is correct

Subtask #11
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	25 ms	3956 KB	Output is correct
2	Correct	25 ms	3932 KB	Output is correct
3	Correct	23 ms	3676 KB	Output is correct
4	Correct	33 ms	4436 KB	Output is correct
5	Correct	30 ms	4192 KB	Output is correct

Subtask #12
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	106 ms	12884 KB	Output is correct
2	Correct	124 ms	16492 KB	Output is correct
3	Correct	119 ms	16040 KB	Output is correct
4	Correct	163 ms	18400 KB	Output is correct
5	Correct	142 ms	15640 KB	Output is correct

Subtask #13
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	125 ms	16976 KB	Output is correct
2	Correct	182 ms	15432 KB	Output is correct
3	Correct	115 ms	14420 KB	Output is correct
4	Correct	163 ms	18156 KB	Output is correct
5	Correct	147 ms	16100 KB	Output is correct

Subtask #14
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	131 ms	16208 KB	Output is correct
2	Correct	146 ms	20072 KB	Output is correct
3	Correct	147 ms	19544 KB	Output is correct
4	Correct	196 ms	22988 KB	Output is correct
5	Correct	170 ms	18768 KB	Output is correct

Subtask #15
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	161 ms	20732 KB	Output is correct
2	Correct	218 ms	18796 KB	Output is correct
3	Correct	139 ms	17492 KB	Output is correct
4	Correct	199 ms	22352 KB	Output is correct
5	Correct	178 ms	19588 KB	Output is correct

Subtask #16
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	148 ms	18772 KB	Output is correct
2	Correct	169 ms	23764 KB	Output is correct
3	Correct	173 ms	23152 KB	Output is correct
4	Correct	223 ms	26340 KB	Output is correct
5	Correct	205 ms	21840 KB	Output is correct

Subtask #17
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	183 ms	24556 KB	Output is correct
2	Correct	245 ms	22100 KB	Output is correct
3	Correct	165 ms	21108 KB	Output is correct
4	Correct	230 ms	26208 KB	Output is correct
5	Correct	209 ms	22864 KB	Output is correct

Subtask #18
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	175 ms	21844 KB	Output is correct
2	Correct	193 ms	27220 KB	Output is correct
3	Correct	194 ms	26452 KB	Output is correct
4	Correct	282 ms	30612 KB	Output is correct
5	Correct	239 ms	25964 KB	Output is correct

Subtask #19
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	218 ms	28160 KB	Output is correct
2	Correct	286 ms	25536 KB	Output is correct
3	Correct	231 ms	24400 KB	Output is correct
4	Correct	284 ms	30300 KB	Output is correct
5	Correct	228 ms	26552 KB	Output is correct

Subtask #20
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	227 ms	24772 KB	Output is correct
2	Correct	242 ms	31472 KB	Output is correct
3	Correct	246 ms	30544 KB	Output is correct
4	Correct	381 ms	35168 KB	Output is correct
5	Correct	319 ms	29652 KB	Output is correct

Subtask #21
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	273 ms	32584 KB	Output is correct
2	Correct	334 ms	29268 KB	Output is correct
3	Correct	278 ms	28368 KB	Output is correct
4	Correct	373 ms	35172 KB	Output is correct
5	Correct	368 ms	30916 KB	Output is correct

답안 #951912

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