답안 #914989

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
914989	2024-01-23T05:22:22 Z	Em1L	Mobile (BOI12_mobile)	C++17	100 / 100	617 ms	26088 KB

mobile

#include <bits/stdc++.h>
using namespace std;

using ll = long long;
using pii = pair<int, int>;
using tiiii = tuple<int, int, ll, ll>;

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

    int n, L; cin >> n >> L;

    vector < ll > x(n), y(n);

    for (int i = 0; i < n; i++)
        cin >> x[i] >> y[i];

    auto Good = [&](double dist) {
        double r = 0;

        for (int i = 0; i < n; i++) {
            if (y[i] > dist)
                continue;

            double left = x[i] - sqrt(dist * dist - y[i] * y[i]);
            double right = x[i] + sqrt(dist * dist - y[i] * y[i]);

            if (left <= r)
                r = max(r, right);
        }

        return r >= L;
    };

    double l = 1, m, r = 2e+9;

    while (r - l > 1e-3) {
        m = (l + r) / 2;

        if (Good(m))
            r = m;
        else
            l = m;
    }

    cout << setprecision(4) << fixed << (l + r) / 2 << "\n";
}

Subtask #1
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 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	604 KB	Output is correct

Subtask #2
4.0 / 4.0

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

Subtask #3
4.0 / 4.0

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

Subtask #4
4.0 / 4.0

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

Subtask #5
4.0 / 4.0

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

Subtask #6
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	344 KB	Output is correct
2	Correct	2 ms	536 KB	Output is correct
3	Correct	1 ms	344 KB	Output is correct
4	Correct	3 ms	344 KB	Output is correct
5	Correct	2 ms	348 KB	Output is correct

Subtask #7
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	22 ms	1628 KB	Output is correct
2	Correct	20 ms	1628 KB	Output is correct
3	Correct	13 ms	1812 KB	Output is correct
4	Correct	42 ms	2400 KB	Output is correct
5	Correct	13 ms	1624 KB	Output is correct

Subtask #8
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	26 ms	1628 KB	Output is correct
2	Correct	33 ms	1368 KB	Output is correct
3	Correct	40 ms	1720 KB	Output is correct
4	Correct	43 ms	2396 KB	Output is correct
5	Correct	50 ms	2652 KB	Output is correct

Subtask #9
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	21 ms	1880 KB	Output is correct
2	Correct	22 ms	1752 KB	Output is correct
3	Correct	19 ms	2396 KB	Output is correct
4	Correct	62 ms	3164 KB	Output is correct
5	Correct	36 ms	2644 KB	Output is correct

Subtask #10
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	26 ms	1884 KB	Output is correct
2	Correct	25 ms	1884 KB	Output is correct
3	Correct	28 ms	2648 KB	Output is correct
4	Correct	64 ms	3164 KB	Output is correct
5	Correct	49 ms	2648 KB	Output is correct

Subtask #11
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	25 ms	1880 KB	Output is correct
2	Correct	25 ms	1884 KB	Output is correct
3	Correct	22 ms	2652 KB	Output is correct
4	Correct	63 ms	3292 KB	Output is correct
5	Correct	48 ms	2648 KB	Output is correct

Subtask #12
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	115 ms	8280 KB	Output is correct
2	Correct	126 ms	8280 KB	Output is correct
3	Correct	131 ms	12372 KB	Output is correct
4	Correct	306 ms	13748 KB	Output is correct
5	Correct	254 ms	11856 KB	Output is correct

Subtask #13
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	124 ms	8284 KB	Output is correct
2	Correct	179 ms	12116 KB	Output is correct
3	Correct	109 ms	11344 KB	Output is correct
4	Correct	301 ms	13136 KB	Output is correct
5	Correct	263 ms	12116 KB	Output is correct

Subtask #14
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	136 ms	10068 KB	Output is correct
2	Correct	150 ms	9836 KB	Output is correct
3	Correct	150 ms	14556 KB	Output is correct
4	Correct	369 ms	15956 KB	Output is correct
5	Correct	298 ms	14196 KB	Output is correct

Subtask #15
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	148 ms	9816 KB	Output is correct
2	Correct	193 ms	14164 KB	Output is correct
3	Correct	139 ms	13420 KB	Output is correct
4	Correct	375 ms	15952 KB	Output is correct
5	Correct	319 ms	14672 KB	Output is correct

Subtask #16
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	156 ms	11352 KB	Output is correct
2	Correct	172 ms	11412 KB	Output is correct
3	Correct	178 ms	16792 KB	Output is correct
4	Correct	427 ms	18260 KB	Output is correct
5	Correct	344 ms	16272 KB	Output is correct

Subtask #17
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	176 ms	11416 KB	Output is correct
2	Correct	218 ms	16716 KB	Output is correct
3	Correct	153 ms	15700 KB	Output is correct
4	Correct	429 ms	18320 KB	Output is correct
5	Correct	361 ms	16976 KB	Output is correct

Subtask #18
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	179 ms	12888 KB	Output is correct
2	Correct	202 ms	12968 KB	Output is correct
3	Correct	197 ms	19028 KB	Output is correct
4	Correct	500 ms	21164 KB	Output is correct
5	Correct	413 ms	18856 KB	Output is correct

Subtask #19
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	202 ms	12972 KB	Output is correct
2	Correct	240 ms	18864 KB	Output is correct
3	Correct	175 ms	18084 KB	Output is correct
4	Correct	487 ms	20904 KB	Output is correct
5	Correct	420 ms	22184 KB	Output is correct

Subtask #20
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	236 ms	20968 KB	Output is correct
2	Correct	255 ms	24552 KB	Output is correct
3	Correct	253 ms	24248 KB	Output is correct
4	Correct	608 ms	26028 KB	Output is correct
5	Correct	490 ms	23016 KB	Output is correct

Subtask #21
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	271 ms	24916 KB	Output is correct
2	Correct	292 ms	23136 KB	Output is correct
3	Correct	226 ms	22504 KB	Output is correct
4	Correct	617 ms	26088 KB	Output is correct
5	Correct	523 ms	23932 KB	Output is correct

답안 #914989

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