Submission #633265

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
633265	2022-08-22T02:51:55 Z	afatpotato	Mobile (BOI12_mobile)	C++14	80 / 100	1000 ms	15956 KB

mobile

#include <bits/stdc++.h>

using namespace std;



vector<pair<double, double> > tower;
long long n, l;

int main() {
    cin >> n >> l;
    tower.resize(n);
    for (int i = 0; i < n; i++) {
        cin >> tower[i].first >> tower[i].second;
    }

    double low = 0;
    double high = 1.5e9;

    while (high - low > 1e-3) {
        double mid = (low + high) / 2;
        double cur = 0;
        for (int i = 0; i < n; i++) {
            double delta = sqrt(mid * mid - tower[i].second * tower[i].second);
            double a = tower[i].first - delta;
            double b = tower[i].first + delta;
            if (a <= cur) {
                cur = max(cur, b);
            }
        }
        if (cur > l) {
            high = mid;
        } else {
            low = mid;
        }
    }
    cout << fixed;
    cout << setprecision(4);
    cout << low << endl;
}

Subtask #1
4.0 / 4.0

#	Verdict	Memory	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

#	Verdict	Execution time	Memory	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	0 ms	212 KB	Output is correct

Subtask #3
4.0 / 4.0

#	Verdict	Execution time	Memory	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	3 ms	212 KB	Output is correct

Subtask #4
4.0 / 4.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	5 ms	340 KB	Output is correct
2	Correct	5 ms	340 KB	Output is correct
3	Correct	5 ms	340 KB	Output is correct
4	Correct	6 ms	340 KB	Output is correct

Subtask #5
4.0 / 4.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	5 ms	340 KB	Output is correct
2	Correct	5 ms	372 KB	Output is correct
3	Correct	4 ms	340 KB	Output is correct
4	Correct	6 ms	340 KB	Output is correct

Subtask #6
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	5 ms	340 KB	Output is correct
2	Correct	5 ms	340 KB	Output is correct
3	Correct	4 ms	340 KB	Output is correct
4	Correct	8 ms	340 KB	Output is correct
5	Correct	5 ms	340 KB	Output is correct

Subtask #7
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	79 ms	1460 KB	Output is correct
2	Correct	86 ms	1504 KB	Output is correct
3	Correct	51 ms	1128 KB	Output is correct
4	Correct	94 ms	1468 KB	Output is correct
5	Correct	41 ms	980 KB	Output is correct

Subtask #8
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	70 ms	1492 KB	Output is correct
2	Correct	69 ms	1392 KB	Output is correct
3	Correct	89 ms	1556 KB	Output is correct
4	Correct	96 ms	1536 KB	Output is correct
5	Correct	107 ms	1652 KB	Output is correct

Subtask #9
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	67 ms	1620 KB	Output is correct
2	Correct	87 ms	1492 KB	Output is correct
3	Correct	79 ms	1620 KB	Output is correct
4	Correct	135 ms	1848 KB	Output is correct
5	Correct	84 ms	1620 KB	Output is correct

Subtask #10
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	112 ms	1856 KB	Output is correct
2	Correct	102 ms	1748 KB	Output is correct
3	Correct	89 ms	1856 KB	Output is correct
4	Correct	147 ms	1876 KB	Output is correct
5	Correct	107 ms	1856 KB	Output is correct

Subtask #11
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	111 ms	1852 KB	Output is correct
2	Correct	109 ms	1856 KB	Output is correct
3	Correct	90 ms	1852 KB	Output is correct
4	Correct	136 ms	1852 KB	Output is correct
5	Correct	106 ms	1852 KB	Output is correct

Subtask #12
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	453 ms	8120 KB	Output is correct
2	Correct	540 ms	8120 KB	Output is correct
3	Correct	532 ms	8120 KB	Output is correct
4	Correct	669 ms	8120 KB	Output is correct
5	Correct	576 ms	8124 KB	Output is correct

Subtask #13
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	566 ms	8112 KB	Output is correct
2	Correct	603 ms	8128 KB	Output is correct
3	Correct	474 ms	8120 KB	Output is correct
4	Correct	661 ms	8136 KB	Output is correct
5	Correct	593 ms	8120 KB	Output is correct

Subtask #14
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	487 ms	9684 KB	Output is correct
2	Correct	687 ms	9688 KB	Output is correct
3	Correct	616 ms	9688 KB	Output is correct
4	Correct	828 ms	9700 KB	Output is correct
5	Correct	652 ms	9684 KB	Output is correct

Subtask #15
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	673 ms	9684 KB	Output is correct
2	Correct	698 ms	9684 KB	Output is correct
3	Correct	557 ms	9684 KB	Output is correct
4	Correct	836 ms	9684 KB	Output is correct
5	Correct	699 ms	9656 KB	Output is correct

Subtask #16
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	567 ms	11252 KB	Output is correct
2	Correct	752 ms	11256 KB	Output is correct
3	Correct	719 ms	11252 KB	Output is correct
4	Correct	950 ms	11248 KB	Output is correct
5	Correct	745 ms	11256 KB	Output is correct

Subtask #17
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	784 ms	11348 KB	Output is correct
2	Correct	794 ms	11256 KB	Output is correct
3	Correct	653 ms	11268 KB	Output is correct
4	Correct	934 ms	11248 KB	Output is correct
5	Correct	803 ms	11252 KB	Output is correct

Subtask #18
0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	631 ms	12816 KB	Output is correct
2	Correct	855 ms	12812 KB	Output is correct
3	Correct	828 ms	12832 KB	Output is correct
4	Execution timed out	1072 ms	12816 KB	Time limit exceeded
5	Halted	0 ms	0 KB	-

Subtask #19
0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	893 ms	12812 KB	Output is correct
2	Correct	901 ms	12828 KB	Output is correct
3	Correct	752 ms	12876 KB	Output is correct
4	Execution timed out	1080 ms	12824 KB	Time limit exceeded
5	Halted	0 ms	0 KB	-

Subtask #20
0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	810 ms	15956 KB	Output is correct
2	Execution timed out	1073 ms	15956 KB	Time limit exceeded
3	Halted	0 ms	0 KB	-

Subtask #21
0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Execution timed out	1087 ms	15956 KB	Time limit exceeded
2	Halted	0 ms	0 KB	-

Submission #633265

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