답안 #589127

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
589127	2022-07-04T09:33:56 Z	jakubd	Mobile (BOI12_mobile)	C++17	100 / 100	691 ms	35344 KB

mobile

#include <bits/stdc++.h>

using namespace std;

int main() {
  ios_base::sync_with_stdio(false); cin.tie(0);

  int n, l; cin >> n >> l;

  vector<long long> x(n), y(n);
  for (int i = 0; i < n; i++) {
    cin >> x[i] >> y[i];
  }

  double left = 0, right = 1e9;
  for (int it = 0; it < 60; it++) {
    double mid = (left + right) / 2, cur = 0;

    for (int i = 0; i < n; i++) {
      double dx = sqrt(mid * mid - y[i] * y[i]);
      if (x[i] - dx <= cur) cur = max(cur, x[i] + dx);
    }

    (cur >= l ? right : left) = mid;
  }

  cout << fixed << setprecision(6) << left << "\n";

  return 0;
};

Subtask #1
4.0 / 4.0

#	결과	메모리	Grader output
1	Correct	212 KB	Output is correct
2	Correct	212 KB	Output is correct
3	Correct	212 KB	Output is correct
4	Correct	212 KB	Output is correct

Subtask #2
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	212 KB	Output is correct
2	Correct	1 ms	212 KB	Output is correct
3	Correct	1 ms	212 KB	Output is correct
4	Correct	1 ms	272 KB	Output is correct

Subtask #3
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	340 KB	Output is correct
2	Correct	1 ms	340 KB	Output is correct
3	Correct	2 ms	340 KB	Output is correct
4	Correct	2 ms	340 KB	Output is correct

Subtask #4
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	340 KB	Output is correct
2	Correct	2 ms	340 KB	Output is correct
3	Correct	2 ms	340 KB	Output is correct
4	Correct	4 ms	340 KB	Output is correct

Subtask #5
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	340 KB	Output is correct
2	Correct	3 ms	340 KB	Output is correct
3	Correct	2 ms	340 KB	Output is correct
4	Correct	3 ms	340 KB	Output is correct

Subtask #6
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	340 KB	Output is correct
2	Correct	4 ms	396 KB	Output is correct
3	Correct	2 ms	340 KB	Output is correct
4	Correct	3 ms	340 KB	Output is correct
5	Correct	4 ms	340 KB	Output is correct

Subtask #7
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	47 ms	1492 KB	Output is correct
2	Correct	26 ms	1492 KB	Output is correct
3	Correct	27 ms	1108 KB	Output is correct
4	Correct	42 ms	1492 KB	Output is correct
5	Correct	23 ms	1108 KB	Output is correct

Subtask #8
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	44 ms	1540 KB	Output is correct
2	Correct	36 ms	1364 KB	Output is correct
3	Correct	40 ms	1584 KB	Output is correct
4	Correct	39 ms	1492 KB	Output is correct
5	Correct	44 ms	1620 KB	Output is correct

Subtask #9
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	49 ms	1692 KB	Output is correct
2	Correct	37 ms	1620 KB	Output is correct
3	Correct	31 ms	1620 KB	Output is correct
4	Correct	55 ms	1876 KB	Output is correct
5	Correct	41 ms	1620 KB	Output is correct

Subtask #10
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	34 ms	1876 KB	Output is correct
2	Correct	36 ms	1880 KB	Output is correct
3	Correct	35 ms	1876 KB	Output is correct
4	Correct	57 ms	1880 KB	Output is correct
5	Correct	49 ms	1884 KB	Output is correct

Subtask #11
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	35 ms	1876 KB	Output is correct
2	Correct	39 ms	1876 KB	Output is correct
3	Correct	38 ms	1876 KB	Output is correct
4	Correct	57 ms	1876 KB	Output is correct
5	Correct	47 ms	1876 KB	Output is correct

Subtask #12
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	231 ms	8148 KB	Output is correct
2	Correct	240 ms	8192 KB	Output is correct
3	Correct	180 ms	8148 KB	Output is correct
4	Correct	268 ms	8148 KB	Output is correct
5	Correct	263 ms	8148 KB	Output is correct

Subtask #13
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	195 ms	8032 KB	Output is correct
2	Correct	384 ms	8196 KB	Output is correct
3	Correct	195 ms	8140 KB	Output is correct
4	Correct	318 ms	8148 KB	Output is correct
5	Correct	335 ms	8148 KB	Output is correct

Subtask #14
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	243 ms	9700 KB	Output is correct
2	Correct	234 ms	9704 KB	Output is correct
3	Correct	300 ms	9704 KB	Output is correct
4	Correct	406 ms	9700 KB	Output is correct
5	Correct	348 ms	9708 KB	Output is correct

Subtask #15
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	236 ms	9712 KB	Output is correct
2	Correct	461 ms	9700 KB	Output is correct
3	Correct	359 ms	9704 KB	Output is correct
4	Correct	382 ms	9712 KB	Output is correct
5	Correct	406 ms	9704 KB	Output is correct

Subtask #16
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	300 ms	11272 KB	Output is correct
2	Correct	284 ms	11276 KB	Output is correct
3	Correct	339 ms	11280 KB	Output is correct
4	Correct	445 ms	11276 KB	Output is correct
5	Correct	476 ms	20368 KB	Output is correct

Subtask #17
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	292 ms	11280 KB	Output is correct
2	Correct	588 ms	11276 KB	Output is correct
3	Correct	271 ms	19668 KB	Output is correct
4	Correct	402 ms	24672 KB	Output is correct
5	Correct	368 ms	21428 KB	Output is correct

Subtask #18
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	252 ms	12836 KB	Output is correct
2	Correct	272 ms	12844 KB	Output is correct
3	Correct	311 ms	12840 KB	Output is correct
4	Correct	462 ms	12756 KB	Output is correct
5	Correct	392 ms	24008 KB	Output is correct

Subtask #19
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	378 ms	12844 KB	Output is correct
2	Correct	497 ms	12840 KB	Output is correct
3	Correct	359 ms	22368 KB	Output is correct
4	Correct	450 ms	28328 KB	Output is correct
5	Correct	445 ms	24356 KB	Output is correct

Subtask #20
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	307 ms	15972 KB	Output is correct
2	Correct	388 ms	15972 KB	Output is correct
3	Correct	346 ms	15976 KB	Output is correct
4	Correct	588 ms	15972 KB	Output is correct
5	Correct	516 ms	29568 KB	Output is correct

Subtask #21
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	347 ms	15972 KB	Output is correct
2	Correct	691 ms	15976 KB	Output is correct
3	Correct	386 ms	28280 KB	Output is correct
4	Correct	586 ms	35344 KB	Output is correct
5	Correct	626 ms	30732 KB	Output is correct

답안 #589127

Compilation message