Submission #493535

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
493535	2021-12-11T22:01:51 Z	imaginary_unit	Mobile (BOI12_mobile)	C++17	100 / 100	387 ms	28004 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

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	324 KB	Output is correct
2	Correct	0 ms	204 KB	Output is correct
3	Correct	0 ms	204 KB	Output is correct
4	Correct	0 ms	316 KB	Output is correct

Subtask #2
4.0 / 4.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	324 KB	Output is correct
2	Correct	1 ms	204 KB	Output is correct
3	Correct	0 ms	204 KB	Output is correct
4	Correct	0 ms	204 KB	Output is correct

Subtask #3
4.0 / 4.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	332 KB	Output is correct
2	Correct	1 ms	332 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

#	Verdict	Execution time	Memory	Grader output
1	Correct	3 ms	332 KB	Output is correct
2	Correct	2 ms	460 KB	Output is correct
3	Correct	2 ms	332 KB	Output is correct
4	Correct	2 ms	460 KB	Output is correct

Subtask #5
4.0 / 4.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	332 KB	Output is correct
2	Correct	2 ms	460 KB	Output is correct
3	Correct	2 ms	332 KB	Output is correct
4	Correct	2 ms	460 KB	Output is correct

Subtask #6
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	332 KB	Output is correct
2	Correct	2 ms	460 KB	Output is correct
3	Correct	2 ms	332 KB	Output is correct
4	Correct	3 ms	460 KB	Output is correct
5	Correct	2 ms	332 KB	Output is correct

Subtask #7
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	30 ms	1868 KB	Output is correct
2	Correct	22 ms	1996 KB	Output is correct
3	Correct	17 ms	1708 KB	Output is correct
4	Correct	26 ms	2380 KB	Output is correct
5	Correct	13 ms	1484 KB	Output is correct

Subtask #8
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	30 ms	2024 KB	Output is correct
2	Correct	24 ms	1908 KB	Output is correct
3	Correct	26 ms	2076 KB	Output is correct
4	Correct	31 ms	2680 KB	Output is correct
5	Correct	29 ms	3144 KB	Output is correct

Subtask #9
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	20 ms	2252 KB	Output is correct
2	Correct	23 ms	2036 KB	Output is correct
3	Correct	22 ms	2528 KB	Output is correct
4	Correct	37 ms	2636 KB	Output is correct
5	Correct	27 ms	2504 KB	Output is correct

Subtask #10
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	35 ms	2304 KB	Output is correct
2	Correct	31 ms	2380 KB	Output is correct
3	Correct	26 ms	2772 KB	Output is correct
4	Correct	37 ms	2628 KB	Output is correct
5	Correct	34 ms	3116 KB	Output is correct

Subtask #11
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	29 ms	2384 KB	Output is correct
2	Correct	30 ms	2376 KB	Output is correct
3	Correct	28 ms	2736 KB	Output is correct
4	Correct	40 ms	2636 KB	Output is correct
5	Correct	38 ms	3084 KB	Output is correct

Subtask #12
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	128 ms	8528 KB	Output is correct
2	Correct	143 ms	8628 KB	Output is correct
3	Correct	136 ms	9008 KB	Output is correct
4	Correct	181 ms	8952 KB	Output is correct
5	Correct	161 ms	15044 KB	Output is correct

Subtask #13
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	141 ms	9140 KB	Output is correct
2	Correct	210 ms	8960 KB	Output is correct
3	Correct	136 ms	9128 KB	Output is correct
4	Correct	174 ms	9020 KB	Output is correct
5	Correct	163 ms	15300 KB	Output is correct

Subtask #14
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	147 ms	10160 KB	Output is correct
2	Correct	177 ms	10332 KB	Output is correct
3	Correct	165 ms	10480 KB	Output is correct
4	Correct	220 ms	11076 KB	Output is correct
5	Correct	189 ms	17732 KB	Output is correct

Subtask #15
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	179 ms	10744 KB	Output is correct
2	Correct	247 ms	10692 KB	Output is correct
3	Correct	155 ms	10564 KB	Output is correct
4	Correct	221 ms	10864 KB	Output is correct
5	Correct	199 ms	18372 KB	Output is correct

Subtask #16
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	162 ms	11716 KB	Output is correct
2	Correct	199 ms	11812 KB	Output is correct
3	Correct	189 ms	12100 KB	Output is correct
4	Correct	250 ms	12596 KB	Output is correct
5	Correct	229 ms	20304 KB	Output is correct

Subtask #17
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	227 ms	12264 KB	Output is correct
2	Correct	276 ms	12148 KB	Output is correct
3	Correct	181 ms	12160 KB	Output is correct
4	Correct	253 ms	12652 KB	Output is correct
5	Correct	230 ms	21328 KB	Output is correct

Subtask #18
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	182 ms	13432 KB	Output is correct
2	Correct	234 ms	13836 KB	Output is correct
3	Correct	216 ms	13980 KB	Output is correct
4	Correct	289 ms	14024 KB	Output is correct
5	Correct	256 ms	23920 KB	Output is correct

Subtask #19
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	226 ms	13752 KB	Output is correct
2	Correct	319 ms	13740 KB	Output is correct
3	Correct	215 ms	13592 KB	Output is correct
4	Correct	300 ms	14020 KB	Output is correct
5	Correct	270 ms	24300 KB	Output is correct

Subtask #20
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	235 ms	16700 KB	Output is correct
2	Correct	286 ms	16888 KB	Output is correct
3	Correct	269 ms	17160 KB	Output is correct
4	Correct	360 ms	16324 KB	Output is correct
5	Correct	314 ms	28004 KB	Output is correct

Subtask #21
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	284 ms	16892 KB	Output is correct
2	Correct	387 ms	16876 KB	Output is correct
3	Correct	278 ms	16944 KB	Output is correct
4	Correct	363 ms	16360 KB	Output is correct
5	Correct	338 ms	27752 KB	Output is correct

Submission #493535

Compilation message