Submission #371522

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
371522	2021-02-26T20:07:11 Z	Codurr	Mobile (BOI12_mobile)	C++14	100 / 100	580 ms	35436 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	364 KB	Output is correct
2	Correct	1 ms	364 KB	Output is correct
3	Correct	1 ms	364 KB	Output is correct
4	Correct	1 ms	364 KB	Output is correct

Subtask #2
4.0 / 4.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	364 KB	Output is correct
2	Correct	1 ms	512 KB	Output is correct
3	Correct	1 ms	364 KB	Output is correct
4	Correct	1 ms	364 KB	Output is correct

Subtask #3
4.0 / 4.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	364 KB	Output is correct
2	Correct	2 ms	364 KB	Output is correct
3	Correct	1 ms	364 KB	Output is correct
4	Correct	2 ms	364 KB	Output is correct

Subtask #4
4.0 / 4.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	3 ms	364 KB	Output is correct
2	Correct	3 ms	492 KB	Output is correct
3	Correct	3 ms	640 KB	Output is correct
4	Correct	3 ms	492 KB	Output is correct

Subtask #5
4.0 / 4.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	3 ms	364 KB	Output is correct
2	Correct	3 ms	492 KB	Output is correct
3	Correct	2 ms	492 KB	Output is correct
4	Correct	3 ms	492 KB	Output is correct

Subtask #6
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	364 KB	Output is correct
2	Correct	3 ms	492 KB	Output is correct
3	Correct	2 ms	492 KB	Output is correct
4	Correct	3 ms	492 KB	Output is correct
5	Correct	3 ms	492 KB	Output is correct

Subtask #7
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	38 ms	1644 KB	Output is correct
2	Correct	31 ms	2676 KB	Output is correct
3	Correct	24 ms	2028 KB	Output is correct
4	Correct	39 ms	2668 KB	Output is correct
5	Correct	21 ms	1516 KB	Output is correct

Subtask #8
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	35 ms	1516 KB	Output is correct
2	Correct	33 ms	2284 KB	Output is correct
3	Correct	46 ms	2816 KB	Output is correct
4	Correct	43 ms	3052 KB	Output is correct
5	Correct	46 ms	3200 KB	Output is correct

Subtask #9
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	31 ms	1772 KB	Output is correct
2	Correct	33 ms	1644 KB	Output is correct
3	Correct	34 ms	2668 KB	Output is correct
4	Correct	56 ms	3948 KB	Output is correct
5	Correct	40 ms	2668 KB	Output is correct

Subtask #10
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	42 ms	1900 KB	Output is correct
2	Correct	49 ms	3308 KB	Output is correct
3	Correct	40 ms	2924 KB	Output is correct
4	Correct	56 ms	3948 KB	Output is correct
5	Correct	54 ms	3308 KB	Output is correct

Subtask #11
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	42 ms	1900 KB	Output is correct
2	Correct	40 ms	3308 KB	Output is correct
3	Correct	40 ms	2924 KB	Output is correct
4	Correct	56 ms	4076 KB	Output is correct
5	Correct	48 ms	3180 KB	Output is correct

Subtask #12
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	177 ms	8356 KB	Output is correct
2	Correct	198 ms	8300 KB	Output is correct
3	Correct	203 ms	15468 KB	Output is correct
4	Correct	292 ms	17900 KB	Output is correct
5	Correct	243 ms	14956 KB	Output is correct

Subtask #13
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	202 ms	8172 KB	Output is correct
2	Correct	309 ms	14744 KB	Output is correct
3	Correct	198 ms	13932 KB	Output is correct
4	Correct	275 ms	17644 KB	Output is correct
5	Correct	248 ms	15468 KB	Output is correct

Subtask #14
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	211 ms	9708 KB	Output is correct
2	Correct	243 ms	9708 KB	Output is correct
3	Correct	242 ms	18540 KB	Output is correct
4	Correct	340 ms	21740 KB	Output is correct
5	Correct	290 ms	17900 KB	Output is correct

Subtask #15
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	244 ms	9836 KB	Output is correct
2	Correct	349 ms	17828 KB	Output is correct
3	Correct	239 ms	16620 KB	Output is correct
4	Correct	328 ms	21484 KB	Output is correct
5	Correct	300 ms	18668 KB	Output is correct

Subtask #16
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	261 ms	11244 KB	Output is correct
2	Correct	282 ms	11292 KB	Output is correct
3	Correct	281 ms	21612 KB	Output is correct
4	Correct	382 ms	25196 KB	Output is correct
5	Correct	345 ms	20588 KB	Output is correct

Subtask #17
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	283 ms	11244 KB	Output is correct
2	Correct	377 ms	20716 KB	Output is correct
3	Correct	289 ms	19820 KB	Output is correct
4	Correct	381 ms	24812 KB	Output is correct
5	Correct	351 ms	21636 KB	Output is correct

Subtask #18
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	286 ms	12924 KB	Output is correct
2	Correct	329 ms	13036 KB	Output is correct
3	Correct	324 ms	24476 KB	Output is correct
4	Correct	459 ms	28524 KB	Output is correct
5	Correct	396 ms	24172 KB	Output is correct

Subtask #19
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	340 ms	12908 KB	Output is correct
2	Correct	428 ms	23532 KB	Output is correct
3	Correct	323 ms	22496 KB	Output is correct
4	Correct	455 ms	28452 KB	Output is correct
5	Correct	397 ms	24556 KB	Output is correct

Subtask #20
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	360 ms	15992 KB	Output is correct
2	Correct	411 ms	15980 KB	Output is correct
3	Correct	411 ms	30548 KB	Output is correct
4	Correct	551 ms	35276 KB	Output is correct
5	Correct	505 ms	29680 KB	Output is correct

Subtask #21
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	411 ms	16132 KB	Output is correct
2	Correct	531 ms	29288 KB	Output is correct
3	Correct	412 ms	28416 KB	Output is correct
4	Correct	580 ms	35436 KB	Output is correct
5	Correct	499 ms	30956 KB	Output is correct

Submission #371522

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