Submission #656293

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
656293	2022-11-06T17:53:46 Z	chjiao	Mobile (BOI12_mobile)	C++14	100 / 100	404 ms	35276 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	0 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	1 ms	212 KB	Output is correct

Subtask #2
4.0 / 4.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	0 ms	212 KB	Output is correct
3	Correct	1 ms	212 KB	Output is correct
4	Correct	1 ms	212 KB	Output is correct

Subtask #3
4.0 / 4.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 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	344 KB	Output is correct

Subtask #4
4.0 / 4.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	3 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	3 ms	468 KB	Output is correct

Subtask #5
4.0 / 4.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	340 KB	Output is correct
2	Correct	2 ms	468 KB	Output is correct
3	Correct	2 ms	424 KB	Output is correct
4	Correct	2 ms	468 KB	Output is correct

Subtask #6
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	340 KB	Output is correct
2	Correct	2 ms	464 KB	Output is correct
3	Correct	2 ms	340 KB	Output is correct
4	Correct	2 ms	468 KB	Output is correct
5	Correct	2 ms	340 KB	Output is correct

Subtask #7
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	32 ms	1376 KB	Output is correct
2	Correct	22 ms	2524 KB	Output is correct
3	Correct	14 ms	1708 KB	Output is correct
4	Correct	27 ms	2600 KB	Output is correct
5	Correct	13 ms	1492 KB	Output is correct

Subtask #8
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	21 ms	1492 KB	Output is correct
2	Correct	22 ms	2200 KB	Output is correct
3	Correct	25 ms	2604 KB	Output is correct
4	Correct	26 ms	2636 KB	Output is correct
5	Correct	29 ms	3028 KB	Output is correct

Subtask #9
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	21 ms	1708 KB	Output is correct
2	Correct	23 ms	2772 KB	Output is correct
3	Correct	22 ms	2516 KB	Output is correct
4	Correct	38 ms	3780 KB	Output is correct
5	Correct	30 ms	2516 KB	Output is correct

Subtask #10
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	27 ms	1892 KB	Output is correct
2	Correct	34 ms	3272 KB	Output is correct
3	Correct	26 ms	2916 KB	Output is correct
4	Correct	40 ms	3768 KB	Output is correct
5	Correct	31 ms	3028 KB	Output is correct

Subtask #11
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	27 ms	1892 KB	Output is correct
2	Correct	28 ms	3216 KB	Output is correct
3	Correct	29 ms	2816 KB	Output is correct
4	Correct	36 ms	3796 KB	Output is correct
5	Correct	31 ms	3156 KB	Output is correct

Subtask #12
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	111 ms	8140 KB	Output is correct
2	Correct	138 ms	15748 KB	Output is correct
3	Correct	147 ms	15228 KB	Output is correct
4	Correct	185 ms	17672 KB	Output is correct
5	Correct	157 ms	14892 KB	Output is correct

Subtask #13
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	137 ms	8132 KB	Output is correct
2	Correct	213 ms	14668 KB	Output is correct
3	Correct	132 ms	13856 KB	Output is correct
4	Correct	175 ms	17352 KB	Output is correct
5	Correct	161 ms	15340 KB	Output is correct

Subtask #14
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	134 ms	9688 KB	Output is correct
2	Correct	170 ms	18968 KB	Output is correct
3	Correct	170 ms	18508 KB	Output is correct
4	Correct	217 ms	21568 KB	Output is correct
5	Correct	188 ms	17676 KB	Output is correct

Subtask #15
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	167 ms	9764 KB	Output is correct
2	Correct	247 ms	17532 KB	Output is correct
3	Correct	154 ms	16472 KB	Output is correct
4	Correct	224 ms	21420 KB	Output is correct
5	Correct	191 ms	18324 KB	Output is correct

Subtask #16
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	159 ms	11228 KB	Output is correct
2	Correct	207 ms	22096 KB	Output is correct
3	Correct	194 ms	21352 KB	Output is correct
4	Correct	268 ms	24784 KB	Output is correct
5	Correct	231 ms	20232 KB	Output is correct

Subtask #17
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	195 ms	11196 KB	Output is correct
2	Correct	286 ms	20408 KB	Output is correct
3	Correct	187 ms	19524 KB	Output is correct
4	Correct	250 ms	24664 KB	Output is correct
5	Correct	219 ms	21384 KB	Output is correct

Subtask #18
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	178 ms	12840 KB	Output is correct
2	Correct	236 ms	25116 KB	Output is correct
3	Correct	218 ms	24352 KB	Output is correct
4	Correct	296 ms	28552 KB	Output is correct
5	Correct	260 ms	23868 KB	Output is correct

Subtask #19
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	223 ms	12804 KB	Output is correct
2	Correct	336 ms	23404 KB	Output is correct
3	Correct	211 ms	22340 KB	Output is correct
4	Correct	291 ms	28324 KB	Output is correct
5	Correct	251 ms	24400 KB	Output is correct

Subtask #20
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	238 ms	16012 KB	Output is correct
2	Correct	301 ms	31392 KB	Output is correct
3	Correct	297 ms	30400 KB	Output is correct
4	Correct	382 ms	35228 KB	Output is correct
5	Correct	322 ms	29616 KB	Output is correct

Subtask #21
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	282 ms	16016 KB	Output is correct
2	Correct	404 ms	29236 KB	Output is correct
3	Correct	270 ms	28284 KB	Output is correct
4	Correct	365 ms	35276 KB	Output is correct
5	Correct	333 ms	30632 KB	Output is correct

Submission #656293

Compilation message