답안 #732536

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
732536	2023-04-29T05:30:57 Z	uy842003	Mobile (BOI12_mobile)	C++17	100 / 100	819 ms	16048 KB

mobile

#include <bits/stdc++.h>
using namespace std;
 
const double eps = 1e-4;
pair<long long, long long> cor[1000001];
 
int main() {
 
    int n;
    double len;
    cin >> n >> len;
    for (int i = 0; i < n; i++)
        cin >> cor[i].first >> cor[i].second;
    double l = 0, r = 4e9 + 1, m;
    while (r - l > eps) {
        m = (l + r) / 2;
        double cur_pos = 0;
        for (int i = 0; i < n; i++) {
            if (m < abs(cor[i].second) + eps) continue;
            double dx = sqrt(m * m - cor[i].second * cor[i].second);
            if (cor[i].first - dx < cur_pos + eps) cur_pos = max(cur_pos, cor[i].first + dx);
        }
        if (len < cur_pos + eps)
            r = m;
        else
            l = m + eps;
    }
    cout << setprecision(3) << fixed << r << endl;
 
    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	0 ms	212 KB	Output is correct
2	Correct	0 ms	212 KB	Output is correct
3	Correct	1 ms	212 KB	Output is correct
4	Correct	0 ms	212 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	2 ms	340 KB	Output is correct
3	Correct	2 ms	212 KB	Output is correct
4	Correct	2 ms	212 KB	Output is correct

Subtask #4
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	340 KB	Output is correct
2	Correct	4 ms	384 KB	Output is correct
3	Correct	3 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	4 ms	340 KB	Output is correct
3	Correct	3 ms	340 KB	Output is correct
4	Correct	4 ms	340 KB	Output is correct

Subtask #6
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	4 ms	348 KB	Output is correct
2	Correct	4 ms	340 KB	Output is correct
3	Correct	3 ms	340 KB	Output is correct
4	Correct	5 ms	340 KB	Output is correct
5	Correct	3 ms	340 KB	Output is correct

Subtask #7
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	54 ms	1404 KB	Output is correct
2	Correct	58 ms	1452 KB	Output is correct
3	Correct	35 ms	1132 KB	Output is correct
4	Correct	57 ms	1352 KB	Output is correct
5	Correct	26 ms	976 KB	Output is correct

Subtask #8
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	46 ms	1424 KB	Output is correct
2	Correct	48 ms	1324 KB	Output is correct
3	Correct	53 ms	1544 KB	Output is correct
4	Correct	62 ms	1504 KB	Output is correct
5	Correct	65 ms	1592 KB	Output is correct

Subtask #9
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	47 ms	1652 KB	Output is correct
2	Correct	62 ms	1532 KB	Output is correct
3	Correct	61 ms	1548 KB	Output is correct
4	Correct	82 ms	1752 KB	Output is correct
5	Correct	57 ms	1612 KB	Output is correct

Subtask #10
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	76 ms	1840 KB	Output is correct
2	Correct	84 ms	1776 KB	Output is correct
3	Correct	62 ms	1776 KB	Output is correct
4	Correct	85 ms	1824 KB	Output is correct
5	Correct	65 ms	1848 KB	Output is correct

Subtask #11
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	79 ms	1756 KB	Output is correct
2	Correct	74 ms	1852 KB	Output is correct
3	Correct	63 ms	1852 KB	Output is correct
4	Correct	82 ms	1860 KB	Output is correct
5	Correct	69 ms	1868 KB	Output is correct

Subtask #12
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	289 ms	8108 KB	Output is correct
2	Correct	381 ms	8012 KB	Output is correct
3	Correct	370 ms	8088 KB	Output is correct
4	Correct	408 ms	8136 KB	Output is correct
5	Correct	338 ms	8000 KB	Output is correct

Subtask #13
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	403 ms	8324 KB	Output is correct
2	Correct	417 ms	8116 KB	Output is correct
3	Correct	316 ms	8012 KB	Output is correct
4	Correct	396 ms	8064 KB	Output is correct
5	Correct	354 ms	8140 KB	Output is correct

Subtask #14
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	358 ms	9680 KB	Output is correct
2	Correct	466 ms	9648 KB	Output is correct
3	Correct	443 ms	9680 KB	Output is correct
4	Correct	505 ms	9688 KB	Output is correct
5	Correct	401 ms	9764 KB	Output is correct

Subtask #15
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	472 ms	9684 KB	Output is correct
2	Correct	504 ms	9712 KB	Output is correct
3	Correct	376 ms	9676 KB	Output is correct
4	Correct	492 ms	9776 KB	Output is correct
5	Correct	414 ms	9656 KB	Output is correct

Subtask #16
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	412 ms	11244 KB	Output is correct
2	Correct	534 ms	11200 KB	Output is correct
3	Correct	510 ms	11256 KB	Output is correct
4	Correct	589 ms	11376 KB	Output is correct
5	Correct	468 ms	11348 KB	Output is correct

Subtask #17
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	567 ms	11244 KB	Output is correct
2	Correct	576 ms	11328 KB	Output is correct
3	Correct	458 ms	11316 KB	Output is correct
4	Correct	587 ms	11244 KB	Output is correct
5	Correct	503 ms	11232 KB	Output is correct

Subtask #18
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	476 ms	12928 KB	Output is correct
2	Correct	607 ms	12916 KB	Output is correct
3	Correct	608 ms	12812 KB	Output is correct
4	Correct	673 ms	12840 KB	Output is correct
5	Correct	557 ms	13004 KB	Output is correct

Subtask #19
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	639 ms	12812 KB	Output is correct
2	Correct	644 ms	12832 KB	Output is correct
3	Correct	530 ms	12728 KB	Output is correct
4	Correct	657 ms	12924 KB	Output is correct
5	Correct	569 ms	12728 KB	Output is correct

Subtask #20
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	594 ms	15884 KB	Output is correct
2	Correct	767 ms	15936 KB	Output is correct
3	Correct	735 ms	15948 KB	Output is correct
4	Correct	819 ms	15928 KB	Output is correct
5	Correct	672 ms	16048 KB	Output is correct

Subtask #21
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	794 ms	15900 KB	Output is correct
2	Correct	791 ms	15904 KB	Output is correct
3	Correct	658 ms	16020 KB	Output is correct
4	Correct	810 ms	16032 KB	Output is correct
5	Correct	718 ms	15936 KB	Output is correct

답안 #732536

Compilation message