답안 #477079

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
477079	2021-09-30T06:13:01 Z	qwerty1234	Mobile (BOI12_mobile)	C++17	100 / 100	488 ms	35388 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	204 KB	Output is correct
2	Correct	1 ms	204 KB	Output is correct
3	Correct	0 ms	204 KB	Output is correct
4	Correct	1 ms	204 KB	Output is correct

Subtask #2
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	204 KB	Output is correct
2	Correct	1 ms	204 KB	Output is correct
3	Correct	1 ms	204 KB	Output is correct
4	Correct	1 ms	204 KB	Output is correct

Subtask #3
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	332 KB	Output is correct
2	Correct	1 ms	460 KB	Output is correct
3	Correct	1 ms	332 KB	Output is correct
4	Correct	1 ms	332 KB	Output is correct

Subtask #4
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	332 KB	Output is correct
2	Correct	2 ms	332 KB	Output is correct
3	Correct	2 ms	332 KB	Output is correct
4	Correct	2 ms	332 KB	Output is correct

Subtask #5
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	332 KB	Output is correct
2	Correct	2 ms	332 KB	Output is correct
3	Correct	2 ms	332 KB	Output is correct
4	Correct	3 ms	332 KB	Output is correct

Subtask #6
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	332 KB	Output is correct
2	Correct	3 ms	332 KB	Output is correct
3	Correct	2 ms	332 KB	Output is correct
4	Correct	3 ms	332 KB	Output is correct
5	Correct	2 ms	332 KB	Output is correct

Subtask #7
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	34 ms	1472 KB	Output is correct
2	Correct	30 ms	1496 KB	Output is correct
3	Correct	16 ms	1144 KB	Output is correct
4	Correct	38 ms	1384 KB	Output is correct
5	Correct	15 ms	1100 KB	Output is correct

Subtask #8
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	26 ms	1484 KB	Output is correct
2	Correct	36 ms	1524 KB	Output is correct
3	Correct	34 ms	1564 KB	Output is correct
4	Correct	32 ms	1604 KB	Output is correct
5	Correct	34 ms	1612 KB	Output is correct

Subtask #9
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	23 ms	1612 KB	Output is correct
2	Correct	32 ms	1496 KB	Output is correct
3	Correct	33 ms	1532 KB	Output is correct
4	Correct	42 ms	1836 KB	Output is correct
5	Correct	28 ms	1612 KB	Output is correct

Subtask #10
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	34 ms	1816 KB	Output is correct
2	Correct	35 ms	1944 KB	Output is correct
3	Correct	37 ms	1832 KB	Output is correct
4	Correct	49 ms	1796 KB	Output is correct
5	Correct	39 ms	1788 KB	Output is correct

Subtask #11
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	41 ms	1832 KB	Output is correct
2	Correct	42 ms	1864 KB	Output is correct
3	Correct	41 ms	1776 KB	Output is correct
4	Correct	53 ms	1872 KB	Output is correct
5	Correct	36 ms	1860 KB	Output is correct

Subtask #12
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	165 ms	8016 KB	Output is correct
2	Correct	189 ms	8228 KB	Output is correct
3	Correct	175 ms	8152 KB	Output is correct
4	Correct	226 ms	8132 KB	Output is correct
5	Correct	204 ms	8236 KB	Output is correct

Subtask #13
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	171 ms	8320 KB	Output is correct
2	Correct	234 ms	8036 KB	Output is correct
3	Correct	184 ms	8132 KB	Output is correct
4	Correct	227 ms	8012 KB	Output is correct
5	Correct	189 ms	8128 KB	Output is correct

Subtask #14
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	166 ms	9776 KB	Output is correct
2	Correct	204 ms	9708 KB	Output is correct
3	Correct	196 ms	9612 KB	Output is correct
4	Correct	259 ms	9840 KB	Output is correct
5	Correct	237 ms	9680 KB	Output is correct

Subtask #15
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	202 ms	9696 KB	Output is correct
2	Correct	284 ms	9624 KB	Output is correct
3	Correct	178 ms	9796 KB	Output is correct
4	Correct	255 ms	9692 KB	Output is correct
5	Correct	232 ms	9772 KB	Output is correct

Subtask #16
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	218 ms	11256 KB	Output is correct
2	Correct	226 ms	11204 KB	Output is correct
3	Correct	255 ms	11332 KB	Output is correct
4	Correct	327 ms	11348 KB	Output is correct
5	Correct	263 ms	20280 KB	Output is correct

Subtask #17
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	249 ms	11320 KB	Output is correct
2	Correct	326 ms	11204 KB	Output is correct
3	Correct	258 ms	11204 KB	Output is correct
4	Correct	306 ms	11356 KB	Output is correct
5	Correct	274 ms	21480 KB	Output is correct

Subtask #18
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	222 ms	12840 KB	Output is correct
2	Correct	284 ms	12868 KB	Output is correct
3	Correct	336 ms	24444 KB	Output is correct
4	Correct	365 ms	28356 KB	Output is correct
5	Correct	318 ms	23876 KB	Output is correct

Subtask #19
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	269 ms	12744 KB	Output is correct
2	Correct	372 ms	23468 KB	Output is correct
3	Correct	307 ms	22340 KB	Output is correct
4	Correct	350 ms	28268 KB	Output is correct
5	Correct	333 ms	24472 KB	Output is correct

Subtask #20
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	289 ms	15940 KB	Output is correct
2	Correct	330 ms	17128 KB	Output is correct
3	Correct	338 ms	30484 KB	Output is correct
4	Correct	477 ms	35128 KB	Output is correct
5	Correct	432 ms	29508 KB	Output is correct

Subtask #21
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	355 ms	17316 KB	Output is correct
2	Correct	488 ms	29252 KB	Output is correct
3	Correct	381 ms	28224 KB	Output is correct
4	Correct	443 ms	35388 KB	Output is correct
5	Correct	415 ms	30788 KB	Output is correct

답안 #477079

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