답안 #655580

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
655580	2022-11-04T18:43:51 Z	bLIC	Mobile (BOI12_mobile)	C++17	100 / 100	417 ms	31576 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	212 KB	Output is correct
2	Correct	212 KB	Output is correct
3	Correct	212 KB	Output is correct
4	Correct	212 KB	Output is correct

Subtask #2
4.0 / 4.0

#	결과	메모리	Grader output
1	Correct	212 KB	Output is correct
2	Correct	212 KB	Output is correct
3	Correct	212 KB	Output is correct
4	Correct	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	1 ms	340 KB	Output is correct
3	Correct	2 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	2 ms	340 KB	Output is correct
2	Correct	2 ms	472 KB	Output is correct
3	Correct	2 ms	388 KB	Output is correct
4	Correct	3 ms	468 KB	Output is correct

Subtask #5
4.0 / 4.0

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

Subtask #6
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	340 KB	Output is correct
2	Correct	2 ms	436 KB	Output is correct
3	Correct	2 ms	340 KB	Output is correct
4	Correct	3 ms	468 KB	Output is correct
5	Correct	3 ms	336 KB	Output is correct

Subtask #7
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	31 ms	1468 KB	Output is correct
2	Correct	23 ms	2524 KB	Output is correct
3	Correct	14 ms	1748 KB	Output is correct
4	Correct	26 ms	2644 KB	Output is correct
5	Correct	14 ms	1404 KB	Output is correct

Subtask #8
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	26 ms	1492 KB	Output is correct
2	Correct	23 ms	2220 KB	Output is correct
3	Correct	30 ms	2616 KB	Output is correct
4	Correct	26 ms	2752 KB	Output is correct
5	Correct	30 ms	3060 KB	Output is correct

Subtask #9
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	20 ms	1684 KB	Output is correct
2	Correct	24 ms	1584 KB	Output is correct
3	Correct	23 ms	2560 KB	Output is correct
4	Correct	37 ms	3728 KB	Output is correct
5	Correct	26 ms	2508 KB	Output is correct

Subtask #10
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	28 ms	1816 KB	Output is correct
2	Correct	30 ms	3276 KB	Output is correct
3	Correct	26 ms	2800 KB	Output is correct
4	Correct	38 ms	3736 KB	Output is correct
5	Correct	31 ms	3028 KB	Output is correct

Subtask #11
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	28 ms	1868 KB	Output is correct
2	Correct	27 ms	1792 KB	Output is correct
3	Correct	28 ms	2804 KB	Output is correct
4	Correct	41 ms	3740 KB	Output is correct
5	Correct	33 ms	3160 KB	Output is correct

Subtask #12
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	112 ms	8104 KB	Output is correct
2	Correct	140 ms	15876 KB	Output is correct
3	Correct	151 ms	15432 KB	Output is correct
4	Correct	196 ms	17740 KB	Output is correct
5	Correct	157 ms	14856 KB	Output is correct

Subtask #13
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	139 ms	8104 KB	Output is correct
2	Correct	210 ms	14656 KB	Output is correct
3	Correct	128 ms	13884 KB	Output is correct
4	Correct	180 ms	17464 KB	Output is correct
5	Correct	169 ms	15372 KB	Output is correct

Subtask #14
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	141 ms	9704 KB	Output is correct
2	Correct	193 ms	18892 KB	Output is correct
3	Correct	172 ms	18352 KB	Output is correct
4	Correct	239 ms	21572 KB	Output is correct
5	Correct	195 ms	17680 KB	Output is correct

Subtask #15
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	180 ms	9708 KB	Output is correct
2	Correct	257 ms	17612 KB	Output is correct
3	Correct	164 ms	16604 KB	Output is correct
4	Correct	241 ms	21416 KB	Output is correct
5	Correct	206 ms	18408 KB	Output is correct

Subtask #16
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	179 ms	11456 KB	Output is correct
2	Correct	222 ms	22092 KB	Output is correct
3	Correct	195 ms	21416 KB	Output is correct
4	Correct	277 ms	24784 KB	Output is correct
5	Correct	226 ms	20368 KB	Output is correct

Subtask #17
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	208 ms	11212 KB	Output is correct
2	Correct	291 ms	20588 KB	Output is correct
3	Correct	206 ms	19632 KB	Output is correct
4	Correct	263 ms	24640 KB	Output is correct
5	Correct	255 ms	21444 KB	Output is correct

Subtask #18
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	186 ms	12840 KB	Output is correct
2	Correct	260 ms	25292 KB	Output is correct
3	Correct	247 ms	24448 KB	Output is correct
4	Correct	305 ms	28456 KB	Output is correct
5	Correct	280 ms	23980 KB	Output is correct

Subtask #19
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	240 ms	12824 KB	Output is correct
2	Correct	338 ms	23392 KB	Output is correct
3	Correct	225 ms	22328 KB	Output is correct
4	Correct	306 ms	28364 KB	Output is correct
5	Correct	273 ms	24388 KB	Output is correct

Subtask #20
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	243 ms	15920 KB	Output is correct
2	Correct	306 ms	31576 KB	Output is correct
3	Correct	298 ms	30484 KB	Output is correct
4	Correct	398 ms	27468 KB	Output is correct
5	Correct	330 ms	29556 KB	Output is correct

Subtask #21
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	297 ms	15940 KB	Output is correct
2	Correct	417 ms	29248 KB	Output is correct
3	Correct	288 ms	28232 KB	Output is correct
4	Correct	394 ms	27204 KB	Output is correct
5	Correct	335 ms	30736 KB	Output is correct

답안 #655580

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