답안 #920897

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
920897	2024-02-03T07:29:35 Z	Kams7	Mobile (BOI12_mobile)	C++17	100 / 100	338 ms	31164 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	344 KB	Output is correct
2	Correct	348 KB	Output is correct
3	Correct	348 KB	Output is correct
4	Correct	344 KB	Output is correct

Subtask #2
4.0 / 4.0

#	결과	메모리	Grader output
1	Correct	344 KB	Output is correct
2	Correct	348 KB	Output is correct
3	Correct	344 KB	Output is correct
4	Correct	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	348 KB	Output is correct
3	Correct	2 ms	348 KB	Output is correct
4	Correct	2 ms	552 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	348 KB	Output is correct
3	Correct	2 ms	532 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	348 KB	Output is correct
3	Correct	1 ms	348 KB	Output is correct
4	Correct	2 ms	484 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	2652 KB	Output is correct
2	Correct	20 ms	2652 KB	Output is correct
3	Correct	14 ms	3316 KB	Output is correct
4	Correct	23 ms	3672 KB	Output is correct
5	Correct	12 ms	2908 KB	Output is correct

Subtask #8
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	24 ms	2652 KB	Output is correct
2	Correct	20 ms	2652 KB	Output is correct
3	Correct	26 ms	2652 KB	Output is correct
4	Correct	25 ms	3676 KB	Output is correct
5	Correct	27 ms	4156 KB	Output is correct

Subtask #9
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	21 ms	2652 KB	Output is correct
2	Correct	21 ms	2652 KB	Output is correct
3	Correct	21 ms	3416 KB	Output is correct
4	Correct	39 ms	4664 KB	Output is correct
5	Correct	24 ms	3416 KB	Output is correct

Subtask #10
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	25 ms	2648 KB	Output is correct
2	Correct	24 ms	3956 KB	Output is correct
3	Correct	24 ms	3676 KB	Output is correct
4	Correct	34 ms	4488 KB	Output is correct
5	Correct	30 ms	3932 KB	Output is correct

Subtask #11
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	26 ms	2648 KB	Output is correct
2	Correct	25 ms	4092 KB	Output is correct
3	Correct	23 ms	3676 KB	Output is correct
4	Correct	33 ms	4480 KB	Output is correct
5	Correct	28 ms	3964 KB	Output is correct

Subtask #12
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	107 ms	8788 KB	Output is correct
2	Correct	125 ms	14868 KB	Output is correct
3	Correct	125 ms	14676 KB	Output is correct
4	Correct	161 ms	16468 KB	Output is correct
5	Correct	142 ms	14160 KB	Output is correct

Subtask #13
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	124 ms	8820 KB	Output is correct
2	Correct	184 ms	14184 KB	Output is correct
3	Correct	121 ms	13352 KB	Output is correct
4	Correct	158 ms	16100 KB	Output is correct
5	Correct	142 ms	14676 KB	Output is correct

Subtask #14
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	130 ms	11128 KB	Output is correct
2	Correct	158 ms	18156 KB	Output is correct
3	Correct	155 ms	17792 KB	Output is correct
4	Correct	198 ms	20344 KB	Output is correct
5	Correct	170 ms	17232 KB	Output is correct

Subtask #15
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	146 ms	10888 KB	Output is correct
2	Correct	229 ms	17140 KB	Output is correct
3	Correct	142 ms	16212 KB	Output is correct
4	Correct	193 ms	20100 KB	Output is correct
5	Correct	173 ms	17604 KB	Output is correct

Subtask #16
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	147 ms	12924 KB	Output is correct
2	Correct	174 ms	21804 KB	Output is correct
3	Correct	173 ms	20816 KB	Output is correct
4	Correct	233 ms	23532 KB	Output is correct
5	Correct	194 ms	20000 KB	Output is correct

Subtask #17
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	175 ms	12880 KB	Output is correct
2	Correct	247 ms	20516 KB	Output is correct
3	Correct	171 ms	19488 KB	Output is correct
4	Correct	224 ms	23632 KB	Output is correct
5	Correct	201 ms	20816 KB	Output is correct

Subtask #18
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	167 ms	14932 KB	Output is correct
2	Correct	199 ms	24636 KB	Output is correct
3	Correct	192 ms	24204 KB	Output is correct
4	Correct	255 ms	27224 KB	Output is correct
5	Correct	228 ms	23692 KB	Output is correct

Subtask #19
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	193 ms	14984 KB	Output is correct
2	Correct	273 ms	23376 KB	Output is correct
3	Correct	184 ms	22660 KB	Output is correct
4	Correct	255 ms	26968 KB	Output is correct
5	Correct	250 ms	24148 KB	Output is correct

Subtask #20
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	212 ms	15968 KB	Output is correct
2	Correct	243 ms	27928 KB	Output is correct
3	Correct	244 ms	27500 KB	Output is correct
4	Correct	318 ms	30544 KB	Output is correct
5	Correct	286 ms	26452 KB	Output is correct

Subtask #21
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	240 ms	15956 KB	Output is correct
2	Correct	338 ms	26192 KB	Output is correct
3	Correct	233 ms	25428 KB	Output is correct
4	Correct	321 ms	31164 KB	Output is correct
5	Correct	292 ms	27496 KB	Output is correct

답안 #920897

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