Submission #319682

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
319682	2020-11-06T06:39:25 Z	dolphingarlic	Mobile (BOI12_mobile)	C++14	100 / 100	554 ms	16376 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	364 KB	Output is correct
2	Correct	1 ms	492 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	364 KB	Output is correct
3	Correct	1 ms	364 KB	Output is correct
4	Correct	1 ms	396 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	1 ms	364 KB	Output is correct
3	Correct	1 ms	488 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	512 KB	Output is correct
3	Correct	2 ms	364 KB	Output is correct
4	Correct	3 ms	364 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	364 KB	Output is correct
3	Correct	2 ms	364 KB	Output is correct
4	Correct	3 ms	364 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	364 KB	Output is correct
3	Correct	2 ms	364 KB	Output is correct
4	Correct	3 ms	364 KB	Output is correct
5	Correct	3 ms	364 KB	Output is correct

Subtask #7
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	37 ms	1644 KB	Output is correct
2	Correct	31 ms	1516 KB	Output is correct
3	Correct	21 ms	1132 KB	Output is correct
4	Correct	38 ms	1516 KB	Output is correct
5	Correct	21 ms	1280 KB	Output is correct

Subtask #8
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	38 ms	1636 KB	Output is correct
2	Correct	33 ms	1388 KB	Output is correct
3	Correct	38 ms	1644 KB	Output is correct
4	Correct	40 ms	1644 KB	Output is correct
5	Correct	45 ms	1772 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	35 ms	1644 KB	Output is correct
4	Correct	55 ms	1900 KB	Output is correct
5	Correct	40 ms	2028 KB	Output is correct

Subtask #10
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	40 ms	1892 KB	Output is correct
2	Correct	40 ms	1900 KB	Output is correct
3	Correct	39 ms	1932 KB	Output is correct
4	Correct	55 ms	1932 KB	Output is correct
5	Correct	47 ms	2020 KB	Output is correct

Subtask #11
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	51 ms	1896 KB	Output is correct
2	Correct	40 ms	1900 KB	Output is correct
3	Correct	48 ms	1900 KB	Output is correct
4	Correct	56 ms	1900 KB	Output is correct
5	Correct	47 ms	1900 KB	Output is correct

Subtask #12
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	186 ms	8160 KB	Output is correct
2	Correct	199 ms	8164 KB	Output is correct
3	Correct	199 ms	8412 KB	Output is correct
4	Correct	295 ms	8564 KB	Output is correct
5	Correct	249 ms	8420 KB	Output is correct

Subtask #13
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	202 ms	8164 KB	Output is correct
2	Correct	271 ms	8168 KB	Output is correct
3	Correct	202 ms	8292 KB	Output is correct
4	Correct	273 ms	8220 KB	Output is correct
5	Correct	246 ms	8164 KB	Output is correct

Subtask #14
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	216 ms	9884 KB	Output is correct
2	Correct	243 ms	9700 KB	Output is correct
3	Correct	237 ms	9828 KB	Output is correct
4	Correct	328 ms	9700 KB	Output is correct
5	Correct	291 ms	9856 KB	Output is correct

Subtask #15
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	244 ms	9828 KB	Output is correct
2	Correct	329 ms	9816 KB	Output is correct
3	Correct	238 ms	9844 KB	Output is correct
4	Correct	358 ms	9828 KB	Output is correct
5	Correct	294 ms	9828 KB	Output is correct

Subtask #16
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	260 ms	11236 KB	Output is correct
2	Correct	299 ms	11364 KB	Output is correct
3	Correct	278 ms	11236 KB	Output is correct
4	Correct	384 ms	11436 KB	Output is correct
5	Correct	333 ms	11492 KB	Output is correct

Subtask #17
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	290 ms	11420 KB	Output is correct
2	Correct	373 ms	11364 KB	Output is correct
3	Correct	297 ms	11364 KB	Output is correct
4	Correct	387 ms	11236 KB	Output is correct
5	Correct	347 ms	11380 KB	Output is correct

Subtask #18
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	285 ms	13028 KB	Output is correct
2	Correct	333 ms	12808 KB	Output is correct
3	Correct	318 ms	13060 KB	Output is correct
4	Correct	433 ms	12900 KB	Output is correct
5	Correct	386 ms	12900 KB	Output is correct

Subtask #19
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	334 ms	12900 KB	Output is correct
2	Correct	421 ms	12900 KB	Output is correct
3	Correct	321 ms	12900 KB	Output is correct
4	Correct	438 ms	12900 KB	Output is correct
5	Correct	394 ms	12896 KB	Output is correct

Subtask #20
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	356 ms	15972 KB	Output is correct
2	Correct	409 ms	16100 KB	Output is correct
3	Correct	396 ms	15972 KB	Output is correct
4	Correct	545 ms	15972 KB	Output is correct
5	Correct	494 ms	15972 KB	Output is correct

Subtask #21
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	409 ms	15972 KB	Output is correct
2	Correct	525 ms	15972 KB	Output is correct
3	Correct	414 ms	16056 KB	Output is correct
4	Correct	554 ms	16100 KB	Output is correct
5	Correct	494 ms	16376 KB	Output is correct

Submission #319682

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