답안 #1023049

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1023049	2024-07-14T09:00:33 Z	tkvinhtruongquang	Mobile (BOI12_mobile)	C++14	100 / 100	358 ms	34640 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;
    for(int i = 1; i <= 42; i ++) {
		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	344 KB	Output is correct
2	Correct	0 ms	464 KB	Output is correct
3	Correct	1 ms	600 KB	Output is correct
4	Correct	1 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	1 ms	348 KB	Output is correct
3	Correct	0 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	1 ms	348 KB	Output is correct
2	Correct	1 ms	528 KB	Output is correct
3	Correct	1 ms	344 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	3 ms	476 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	3 ms	604 KB	Output is correct
3	Correct	3 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	3 ms	348 KB	Output is correct
2	Correct	2 ms	600 KB	Output is correct
3	Correct	2 ms	348 KB	Output is correct
4	Correct	4 ms	600 KB	Output is correct
5	Correct	2 ms	536 KB	Output is correct

Subtask #7
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	30 ms	2392 KB	Output is correct
2	Correct	21 ms	2652 KB	Output is correct
3	Correct	15 ms	1884 KB	Output is correct
4	Correct	32 ms	2652 KB	Output is correct
5	Correct	14 ms	1640 KB	Output is correct

Subtask #8
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	22 ms	2396 KB	Output is correct
2	Correct	25 ms	2140 KB	Output is correct
3	Correct	27 ms	2504 KB	Output is correct
4	Correct	26 ms	2652 KB	Output is correct
5	Correct	34 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	21 ms	2848 KB	Output is correct
3	Correct	24 ms	2604 KB	Output is correct
4	Correct	38 ms	3960 KB	Output is correct
5	Correct	28 ms	2648 KB	Output is correct

Subtask #10
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	26 ms	3376 KB	Output is correct
2	Correct	26 ms	3300 KB	Output is correct
3	Correct	39 ms	3036 KB	Output is correct
4	Correct	36 ms	3928 KB	Output is correct
5	Correct	54 ms	3164 KB	Output is correct

Subtask #11
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	24 ms	3348 KB	Output is correct
2	Correct	31 ms	3492 KB	Output is correct
3	Correct	25 ms	2904 KB	Output is correct
4	Correct	38 ms	3932 KB	Output is correct
5	Correct	35 ms	3164 KB	Output is correct

Subtask #12
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	109 ms	12372 KB	Output is correct
2	Correct	134 ms	16056 KB	Output is correct
3	Correct	123 ms	15440 KB	Output is correct
4	Correct	174 ms	17744 KB	Output is correct
5	Correct	176 ms	15180 KB	Output is correct

Subtask #13
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	125 ms	16464 KB	Output is correct
2	Correct	194 ms	14712 KB	Output is correct
3	Correct	119 ms	13904 KB	Output is correct
4	Correct	185 ms	17488 KB	Output is correct
5	Correct	152 ms	15444 KB	Output is correct

Subtask #14
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	134 ms	14932 KB	Output is correct
2	Correct	196 ms	19280 KB	Output is correct
3	Correct	145 ms	18180 KB	Output is correct
4	Correct	213 ms	21292 KB	Output is correct
5	Correct	191 ms	17744 KB	Output is correct

Subtask #15
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	146 ms	19536 KB	Output is correct
2	Correct	224 ms	17380 KB	Output is correct
3	Correct	140 ms	16468 KB	Output is correct
4	Correct	203 ms	21332 KB	Output is correct
5	Correct	177 ms	18388 KB	Output is correct

Subtask #16
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	150 ms	17232 KB	Output is correct
2	Correct	175 ms	22096 KB	Output is correct
3	Correct	174 ms	21328 KB	Output is correct
4	Correct	241 ms	24344 KB	Output is correct
5	Correct	252 ms	20304 KB	Output is correct

Subtask #17
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	180 ms	22612 KB	Output is correct
2	Correct	262 ms	20824 KB	Output is correct
3	Correct	173 ms	19384 KB	Output is correct
4	Correct	239 ms	24400 KB	Output is correct
5	Correct	244 ms	21284 KB	Output is correct

Subtask #18
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	178 ms	19796 KB	Output is correct
2	Correct	197 ms	24912 KB	Output is correct
3	Correct	200 ms	24260 KB	Output is correct
4	Correct	322 ms	28244 KB	Output is correct
5	Correct	264 ms	23896 KB	Output is correct

Subtask #19
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	205 ms	25660 KB	Output is correct
2	Correct	298 ms	23412 KB	Output is correct
3	Correct	205 ms	22212 KB	Output is correct
4	Correct	284 ms	27988 KB	Output is correct
5	Correct	265 ms	24524 KB	Output is correct

Subtask #20
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	237 ms	24344 KB	Output is correct
2	Correct	313 ms	31464 KB	Output is correct
3	Correct	241 ms	30036 KB	Output is correct
4	Correct	358 ms	34516 KB	Output is correct
5	Correct	328 ms	29008 KB	Output is correct

Subtask #21
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	263 ms	31828 KB	Output is correct
2	Correct	342 ms	28752 KB	Output is correct
3	Correct	283 ms	27640 KB	Output is correct
4	Correct	336 ms	34640 KB	Output is correct
5	Correct	300 ms	30292 KB	Output is correct

답안 #1023049

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