답안 #835851

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
835851	2023-08-23T21:14:26 Z	iamjiamingliu	Mobile (BOI12_mobile)	C++17	100 / 100	337 ms	35160 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	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 #2
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	0 ms	324 KB	Output is correct
3	Correct	1 ms	260 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	2 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	3 ms	340 KB	Output is correct
2	Correct	2 ms	468 KB	Output is correct
3	Correct	2 ms	340 KB	Output is correct
4	Correct	3 ms	596 KB	Output is correct

Subtask #5
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	340 KB	Output is correct
2	Correct	2 ms	468 KB	Output is correct
3	Correct	1 ms	340 KB	Output is correct
4	Correct	2 ms	468 KB	Output is correct

Subtask #6
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 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	468 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	24 ms	1492 KB	Output is correct
2	Correct	24 ms	1492 KB	Output is correct
3	Correct	13 ms	1748 KB	Output is correct
4	Correct	23 ms	2644 KB	Output is correct
5	Correct	13 ms	1492 KB	Output is correct

Subtask #8
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	22 ms	1492 KB	Output is correct
2	Correct	27 ms	2128 KB	Output is correct
3	Correct	24 ms	2664 KB	Output is correct
4	Correct	30 ms	2784 KB	Output is correct
5	Correct	27 ms	3156 KB	Output is correct

Subtask #9
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	20 ms	1620 KB	Output is correct
2	Correct	21 ms	1536 KB	Output is correct
3	Correct	21 ms	2516 KB	Output is correct
4	Correct	33 ms	3736 KB	Output is correct
5	Correct	31 ms	2516 KB	Output is correct

Subtask #10
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	33 ms	1876 KB	Output is correct
2	Correct	25 ms	3176 KB	Output is correct
3	Correct	27 ms	2900 KB	Output is correct
4	Correct	33 ms	3796 KB	Output is correct
5	Correct	29 ms	3020 KB	Output is correct

Subtask #11
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	25 ms	1888 KB	Output is correct
2	Correct	27 ms	1876 KB	Output is correct
3	Correct	30 ms	2888 KB	Output is correct
4	Correct	48 ms	3796 KB	Output is correct
5	Correct	42 ms	3156 KB	Output is correct

Subtask #12
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	106 ms	8036 KB	Output is correct
2	Correct	130 ms	15964 KB	Output is correct
3	Correct	131 ms	15324 KB	Output is correct
4	Correct	180 ms	17740 KB	Output is correct
5	Correct	162 ms	14960 KB	Output is correct

Subtask #13
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	124 ms	8260 KB	Output is correct
2	Correct	185 ms	14720 KB	Output is correct
3	Correct	132 ms	13900 KB	Output is correct
4	Correct	183 ms	17408 KB	Output is correct
5	Correct	157 ms	15420 KB	Output is correct

Subtask #14
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	140 ms	9708 KB	Output is correct
2	Correct	155 ms	18960 KB	Output is correct
3	Correct	162 ms	18388 KB	Output is correct
4	Correct	212 ms	21584 KB	Output is correct
5	Correct	171 ms	17588 KB	Output is correct

Subtask #15
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	154 ms	9668 KB	Output is correct
2	Correct	265 ms	17524 KB	Output is correct
3	Correct	142 ms	16540 KB	Output is correct
4	Correct	193 ms	21440 KB	Output is correct
5	Correct	191 ms	18424 KB	Output is correct

Subtask #16
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	153 ms	11212 KB	Output is correct
2	Correct	182 ms	22092 KB	Output is correct
3	Correct	175 ms	21312 KB	Output is correct
4	Correct	237 ms	24792 KB	Output is correct
5	Correct	212 ms	20308 KB	Output is correct

Subtask #17
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	187 ms	11272 KB	Output is correct
2	Correct	255 ms	20516 KB	Output is correct
3	Correct	171 ms	19656 KB	Output is correct
4	Correct	252 ms	24636 KB	Output is correct
5	Correct	200 ms	21324 KB	Output is correct

Subtask #18
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	228 ms	12748 KB	Output is correct
2	Correct	209 ms	25232 KB	Output is correct
3	Correct	194 ms	24336 KB	Output is correct
4	Correct	269 ms	28412 KB	Output is correct
5	Correct	239 ms	23968 KB	Output is correct

Subtask #19
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	198 ms	12840 KB	Output is correct
2	Correct	278 ms	23312 KB	Output is correct
3	Correct	189 ms	22364 KB	Output is correct
4	Correct	268 ms	28320 KB	Output is correct
5	Correct	241 ms	24432 KB	Output is correct

Subtask #20
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	310 ms	15952 KB	Output is correct
2	Correct	245 ms	31476 KB	Output is correct
3	Correct	244 ms	30456 KB	Output is correct
4	Correct	326 ms	35136 KB	Output is correct
5	Correct	292 ms	29456 KB	Output is correct

Subtask #21
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	248 ms	16352 KB	Output is correct
2	Correct	337 ms	29132 KB	Output is correct
3	Correct	245 ms	28380 KB	Output is correct
4	Correct	327 ms	35160 KB	Output is correct
5	Correct	289 ms	30668 KB	Output is correct

답안 #835851

Compilation message