Submission #470014

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
470014	2021-09-02T15:13:22 Z	Shogun3103	Mobile (BOI12_mobile)	C++17	100 / 100	524 ms	24628 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	204 KB	Output is correct
2	Correct	1 ms	328 KB	Output is correct
3	Correct	1 ms	204 KB	Output is correct
4	Correct	1 ms	204 KB	Output is correct

Subtask #2
4.0 / 4.0

#	Verdict	Execution time	Memory	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

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	332 KB	Output is correct
2	Correct	2 ms	336 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	3 ms	332 KB	Output is correct
3	Correct	2 ms	332 KB	Output is correct
4	Correct	3 ms	464 KB	Output is correct

Subtask #5
4.0 / 4.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	3 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

Subtask #6
5.0 / 5.0

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

Subtask #7
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	38 ms	1596 KB	Output is correct
2	Correct	31 ms	1656 KB	Output is correct
3	Correct	21 ms	1284 KB	Output is correct
4	Correct	51 ms	1564 KB	Output is correct
5	Correct	21 ms	1228 KB	Output is correct

Subtask #8
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	35 ms	1584 KB	Output is correct
2	Correct	32 ms	1532 KB	Output is correct
3	Correct	37 ms	1732 KB	Output is correct
4	Correct	39 ms	1732 KB	Output is correct
5	Correct	43 ms	2000 KB	Output is correct

Subtask #9
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	32 ms	1848 KB	Output is correct
2	Correct	34 ms	1732 KB	Output is correct
3	Correct	33 ms	1736 KB	Output is correct
4	Correct	52 ms	2116 KB	Output is correct
5	Correct	40 ms	1768 KB	Output is correct

Subtask #10
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	43 ms	1996 KB	Output is correct
2	Correct	40 ms	1996 KB	Output is correct
3	Correct	39 ms	2024 KB	Output is correct
4	Correct	52 ms	2128 KB	Output is correct
5	Correct	46 ms	1984 KB	Output is correct

Subtask #11
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	41 ms	2044 KB	Output is correct
2	Correct	41 ms	2024 KB	Output is correct
3	Correct	39 ms	2032 KB	Output is correct
4	Correct	54 ms	2240 KB	Output is correct
5	Correct	53 ms	2120 KB	Output is correct

Subtask #12
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	181 ms	8388 KB	Output is correct
2	Correct	216 ms	8204 KB	Output is correct
3	Correct	206 ms	8516 KB	Output is correct
4	Correct	256 ms	8396 KB	Output is correct
5	Correct	233 ms	8460 KB	Output is correct

Subtask #13
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	208 ms	8288 KB	Output is correct
2	Correct	271 ms	8388 KB	Output is correct
3	Correct	198 ms	8440 KB	Output is correct
4	Correct	259 ms	8420 KB	Output is correct
5	Correct	238 ms	8424 KB	Output is correct

Subtask #14
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	217 ms	9796 KB	Output is correct
2	Correct	248 ms	9796 KB	Output is correct
3	Correct	246 ms	10128 KB	Output is correct
4	Correct	316 ms	10048 KB	Output is correct
5	Correct	276 ms	10052 KB	Output is correct

Subtask #15
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	249 ms	9852 KB	Output is correct
2	Correct	352 ms	9968 KB	Output is correct
3	Correct	234 ms	9956 KB	Output is correct
4	Correct	328 ms	10092 KB	Output is correct
5	Correct	285 ms	10140 KB	Output is correct

Subtask #16
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	262 ms	11400 KB	Output is correct
2	Correct	290 ms	11468 KB	Output is correct
3	Correct	284 ms	11588 KB	Output is correct
4	Correct	363 ms	11532 KB	Output is correct
5	Correct	326 ms	11524 KB	Output is correct

Subtask #17
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	296 ms	11424 KB	Output is correct
2	Correct	372 ms	11636 KB	Output is correct
3	Correct	281 ms	11676 KB	Output is correct
4	Correct	356 ms	11632 KB	Output is correct
5	Correct	331 ms	11524 KB	Output is correct

Subtask #18
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	299 ms	12868 KB	Output is correct
2	Correct	327 ms	13064 KB	Output is correct
3	Correct	328 ms	13124 KB	Output is correct
4	Correct	409 ms	13240 KB	Output is correct
5	Correct	376 ms	13120 KB	Output is correct

Subtask #19
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	331 ms	12996 KB	Output is correct
2	Correct	425 ms	13132 KB	Output is correct
3	Correct	322 ms	13252 KB	Output is correct
4	Correct	411 ms	13208 KB	Output is correct
5	Correct	380 ms	13276 KB	Output is correct

Subtask #20
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	369 ms	16188 KB	Output is correct
2	Correct	421 ms	16220 KB	Output is correct
3	Correct	413 ms	16196 KB	Output is correct
4	Correct	521 ms	16180 KB	Output is correct
5	Correct	478 ms	24628 KB	Output is correct

Subtask #21
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	414 ms	15940 KB	Output is correct
2	Correct	524 ms	16324 KB	Output is correct
3	Correct	403 ms	15940 KB	Output is correct
4	Correct	523 ms	15976 KB	Output is correct
5	Correct	493 ms	24628 KB	Output is correct

Submission #470014

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