답안 #549476

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
549476	2022-04-15T21:33:01 Z	aidan0626	Mobile (BOI12_mobile)	C++14	100 / 100	424 ms	35316 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	0 ms	332 KB	Output is correct

Subtask #2
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	212 KB	Output is correct
2	Correct	1 ms	328 KB	Output is correct
3	Correct	1 ms	212 KB	Output is correct
4	Correct	1 ms	340 KB	Output is correct

Subtask #3
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	340 KB	Output is correct
2	Correct	1 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	2 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	2 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	468 KB	Output is correct
3	Correct	2 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	2 ms	340 KB	Output is correct
2	Correct	2 ms	472 KB	Output is correct
3	Correct	2 ms	340 KB	Output is correct
4	Correct	4 ms	420 KB	Output is correct
5	Correct	3 ms	340 KB	Output is correct

Subtask #7
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	30 ms	2260 KB	Output is correct
2	Correct	23 ms	2528 KB	Output is correct
3	Correct	15 ms	1796 KB	Output is correct
4	Correct	27 ms	2656 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	25 ms	2256 KB	Output is correct
2	Correct	26 ms	2208 KB	Output is correct
3	Correct	29 ms	2516 KB	Output is correct
4	Correct	31 ms	2748 KB	Output is correct
5	Correct	30 ms	3048 KB	Output is correct

Subtask #9
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	20 ms	2264 KB	Output is correct
2	Correct	23 ms	2780 KB	Output is correct
3	Correct	22 ms	2516 KB	Output is correct
4	Correct	39 ms	3812 KB	Output is correct
5	Correct	29 ms	2644 KB	Output is correct

Subtask #10
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	33 ms	3408 KB	Output is correct
2	Correct	33 ms	3252 KB	Output is correct
3	Correct	27 ms	2860 KB	Output is correct
4	Correct	39 ms	3836 KB	Output is correct
5	Correct	32 ms	3016 KB	Output is correct

Subtask #11
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	30 ms	3332 KB	Output is correct
2	Correct	37 ms	3188 KB	Output is correct
3	Correct	32 ms	2804 KB	Output is correct
4	Correct	39 ms	3924 KB	Output is correct
5	Correct	32 ms	3036 KB	Output is correct

Subtask #12
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	121 ms	12436 KB	Output is correct
2	Correct	159 ms	15848 KB	Output is correct
3	Correct	162 ms	15308 KB	Output is correct
4	Correct	188 ms	17672 KB	Output is correct
5	Correct	230 ms	14964 KB	Output is correct

Subtask #13
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	155 ms	16348 KB	Output is correct
2	Correct	213 ms	14668 KB	Output is correct
3	Correct	170 ms	13844 KB	Output is correct
4	Correct	183 ms	17480 KB	Output is correct
5	Correct	164 ms	15436 KB	Output is correct

Subtask #14
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	158 ms	14884 KB	Output is correct
2	Correct	182 ms	18956 KB	Output is correct
3	Correct	172 ms	18400 KB	Output is correct
4	Correct	247 ms	21648 KB	Output is correct
5	Correct	196 ms	17812 KB	Output is correct

Subtask #15
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	183 ms	19548 KB	Output is correct
2	Correct	274 ms	17616 KB	Output is correct
3	Correct	166 ms	16632 KB	Output is correct
4	Correct	267 ms	21340 KB	Output is correct
5	Correct	205 ms	18372 KB	Output is correct

Subtask #16
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	172 ms	17308 KB	Output is correct
2	Correct	212 ms	22080 KB	Output is correct
3	Correct	213 ms	21460 KB	Output is correct
4	Correct	306 ms	24784 KB	Output is correct
5	Correct	230 ms	20312 KB	Output is correct

Subtask #17
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	231 ms	22732 KB	Output is correct
2	Correct	288 ms	20424 KB	Output is correct
3	Correct	216 ms	19548 KB	Output is correct
4	Correct	266 ms	24576 KB	Output is correct
5	Correct	252 ms	21412 KB	Output is correct

Subtask #18
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	214 ms	19772 KB	Output is correct
2	Correct	237 ms	25252 KB	Output is correct
3	Correct	261 ms	24484 KB	Output is correct
4	Correct	298 ms	28496 KB	Output is correct
5	Correct	290 ms	24092 KB	Output is correct

Subtask #19
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	271 ms	26040 KB	Output is correct
2	Correct	326 ms	23428 KB	Output is correct
3	Correct	263 ms	22368 KB	Output is correct
4	Correct	302 ms	28320 KB	Output is correct
5	Correct	301 ms	24436 KB	Output is correct

Subtask #20
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	237 ms	24656 KB	Output is correct
2	Correct	327 ms	31512 KB	Output is correct
3	Correct	293 ms	30532 KB	Output is correct
4	Correct	404 ms	35164 KB	Output is correct
5	Correct	357 ms	29444 KB	Output is correct

Subtask #21
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	315 ms	32492 KB	Output is correct
2	Correct	424 ms	29184 KB	Output is correct
3	Correct	318 ms	28252 KB	Output is correct
4	Correct	392 ms	35316 KB	Output is correct
5	Correct	353 ms	30716 KB	Output is correct

답안 #549476

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