답안 #1023045

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1023045	2024-07-14T08:57:11 Z	tkvinhtruongquang	Mobile (BOI12_mobile)	C++14	100 / 100	445 ms	35408 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;
    for(int i = 1; i <= 50; i ++) {
		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

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	348 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	1 ms	348 KB	Output is correct

Subtask #2
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	344 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	1 ms	348 KB	Output is correct

Subtask #3
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	508 KB	Output is correct
2	Correct	1 ms	348 KB	Output is correct
3	Correct	2 ms	348 KB	Output is correct
4	Correct	1 ms	344 KB	Output is correct

Subtask #4
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	476 KB	Output is correct
2	Correct	3 ms	604 KB	Output is correct
3	Correct	2 ms	348 KB	Output is correct
4	Correct	4 ms	600 KB	Output is correct

Subtask #5
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	348 KB	Output is correct
2	Correct	3 ms	604 KB	Output is correct
3	Correct	2 ms	724 KB	Output is correct
4	Correct	2 ms	584 KB	Output is correct

Subtask #6
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	348 KB	Output is correct
2	Correct	2 ms	604 KB	Output is correct
3	Correct	2 ms	344 KB	Output is correct
4	Correct	2 ms	604 KB	Output is correct
5	Correct	2 ms	532 KB	Output is correct

Subtask #7
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	43 ms	2236 KB	Output is correct
2	Correct	24 ms	2628 KB	Output is correct
3	Correct	19 ms	1880 KB	Output is correct
4	Correct	49 ms	2652 KB	Output is correct
5	Correct	21 ms	1624 KB	Output is correct

Subtask #8
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	23 ms	2392 KB	Output is correct
2	Correct	25 ms	2136 KB	Output is correct
3	Correct	48 ms	2652 KB	Output is correct
4	Correct	38 ms	2820 KB	Output is correct
5	Correct	56 ms	3156 KB	Output is correct

Subtask #9
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	28 ms	2396 KB	Output is correct
2	Correct	32 ms	2648 KB	Output is correct
3	Correct	34 ms	2648 KB	Output is correct
4	Correct	37 ms	3932 KB	Output is correct
5	Correct	42 ms	2652 KB	Output is correct

Subtask #10
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	28 ms	3508 KB	Output is correct
2	Correct	27 ms	3416 KB	Output is correct
3	Correct	26 ms	2904 KB	Output is correct
4	Correct	37 ms	3932 KB	Output is correct
5	Correct	47 ms	3184 KB	Output is correct

Subtask #11
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	38 ms	3420 KB	Output is correct
2	Correct	36 ms	3372 KB	Output is correct
3	Correct	27 ms	3048 KB	Output is correct
4	Correct	69 ms	3928 KB	Output is correct
5	Correct	33 ms	3272 KB	Output is correct

Subtask #12
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	130 ms	12372 KB	Output is correct
2	Correct	151 ms	15884 KB	Output is correct
3	Correct	141 ms	15248 KB	Output is correct
4	Correct	216 ms	17720 KB	Output is correct
5	Correct	192 ms	14904 KB	Output is correct

Subtask #13
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	160 ms	16472 KB	Output is correct
2	Correct	247 ms	14796 KB	Output is correct
3	Correct	138 ms	13876 KB	Output is correct
4	Correct	199 ms	17592 KB	Output is correct
5	Correct	166 ms	15504 KB	Output is correct

Subtask #14
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	148 ms	14832 KB	Output is correct
2	Correct	159 ms	18988 KB	Output is correct
3	Correct	157 ms	18396 KB	Output is correct
4	Correct	232 ms	21712 KB	Output is correct
5	Correct	227 ms	17704 KB	Output is correct

Subtask #15
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	160 ms	19532 KB	Output is correct
2	Correct	274 ms	17748 KB	Output is correct
3	Correct	199 ms	16468 KB	Output is correct
4	Correct	223 ms	21584 KB	Output is correct
5	Correct	202 ms	18468 KB	Output is correct

Subtask #16
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	167 ms	17236 KB	Output is correct
2	Correct	219 ms	22180 KB	Output is correct
3	Correct	181 ms	21340 KB	Output is correct
4	Correct	267 ms	24908 KB	Output is correct
5	Correct	326 ms	20424 KB	Output is correct

Subtask #17
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	206 ms	22864 KB	Output is correct
2	Correct	320 ms	20860 KB	Output is correct
3	Correct	226 ms	19540 KB	Output is correct
4	Correct	265 ms	24536 KB	Output is correct
5	Correct	282 ms	21328 KB	Output is correct

Subtask #18
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	231 ms	19892 KB	Output is correct
2	Correct	227 ms	25172 KB	Output is correct
3	Correct	218 ms	24576 KB	Output is correct
4	Correct	319 ms	28500 KB	Output is correct
5	Correct	277 ms	24108 KB	Output is correct

Subtask #19
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	228 ms	25936 KB	Output is correct
2	Correct	365 ms	23380 KB	Output is correct
3	Correct	244 ms	22352 KB	Output is correct
4	Correct	303 ms	28240 KB	Output is correct
5	Correct	279 ms	24400 KB	Output is correct

Subtask #20
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	272 ms	24596 KB	Output is correct
2	Correct	309 ms	31572 KB	Output is correct
3	Correct	267 ms	30660 KB	Output is correct
4	Correct	381 ms	35156 KB	Output is correct
5	Correct	344 ms	29560 KB	Output is correct

Subtask #21
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	289 ms	32340 KB	Output is correct
2	Correct	445 ms	29264 KB	Output is correct
3	Correct	283 ms	28244 KB	Output is correct
4	Correct	383 ms	35408 KB	Output is correct
5	Correct	362 ms	30804 KB	Output is correct

답안 #1023045

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