답안 #633262

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
633262	2022-08-22T02:48:25 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;
    }
    sort(tower.begin(), tower.end());
    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(9);
    cout << low << endl;
}

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	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

#	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	3 ms	332 KB	Output is correct

Subtask #4
4.0 / 4.0

#	결과	실행 시간	메모리	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 #5
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	5 ms	340 KB	Output is correct
2	Correct	6 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

#	결과	실행 시간	메모리	Grader output
1	Correct	5 ms	340 KB	Output is correct
2	Correct	6 ms	340 KB	Output is correct
3	Correct	6 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

#	결과	실행 시간	메모리	Grader output
1	Correct	79 ms	1364 KB	Output is correct
2	Correct	80 ms	1492 KB	Output is correct
3	Correct	57 ms	1128 KB	Output is correct
4	Correct	89 ms	1464 KB	Output is correct
5	Correct	42 ms	980 KB	Output is correct

Subtask #8
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	74 ms	1492 KB	Output is correct
2	Correct	71 ms	1400 KB	Output is correct
3	Correct	88 ms	1560 KB	Output is correct
4	Correct	92 ms	1532 KB	Output is correct
5	Correct	111 ms	1652 KB	Output is correct

Subtask #9
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	75 ms	1664 KB	Output is correct
2	Correct	92 ms	1576 KB	Output is correct
3	Correct	81 ms	1620 KB	Output is correct
4	Correct	142 ms	1868 KB	Output is correct
5	Correct	92 ms	1696 KB	Output is correct

Subtask #10
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	109 ms	1860 KB	Output is correct
2	Correct	104 ms	1748 KB	Output is correct
3	Correct	94 ms	1876 KB	Output is correct
4	Correct	149 ms	1748 KB	Output is correct
5	Correct	111 ms	1848 KB	Output is correct

Subtask #11
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	109 ms	1852 KB	Output is correct
2	Correct	106 ms	1848 KB	Output is correct
3	Correct	97 ms	1852 KB	Output is correct
4	Correct	141 ms	1856 KB	Output is correct
5	Correct	107 ms	1748 KB	Output is correct

Subtask #12
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	422 ms	8020 KB	Output is correct
2	Correct	540 ms	8116 KB	Output is correct
3	Correct	541 ms	8120 KB	Output is correct
4	Correct	693 ms	8116 KB	Output is correct
5	Correct	605 ms	8116 KB	Output is correct

Subtask #13
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	574 ms	8116 KB	Output is correct
2	Correct	569 ms	8120 KB	Output is correct
3	Correct	513 ms	8120 KB	Output is correct
4	Correct	683 ms	8116 KB	Output is correct
5	Correct	567 ms	8120 KB	Output is correct

Subtask #14
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	488 ms	9804 KB	Output is correct
2	Correct	667 ms	9684 KB	Output is correct
3	Correct	637 ms	9684 KB	Output is correct
4	Correct	835 ms	9684 KB	Output is correct
5	Correct	681 ms	9684 KB	Output is correct

Subtask #15
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	683 ms	9688 KB	Output is correct
2	Correct	694 ms	9684 KB	Output is correct
3	Correct	553 ms	9688 KB	Output is correct
4	Correct	824 ms	9684 KB	Output is correct
5	Correct	699 ms	9684 KB	Output is correct

Subtask #16
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	586 ms	11220 KB	Output is correct
2	Correct	766 ms	11256 KB	Output is correct
3	Correct	771 ms	11244 KB	Output is correct
4	Correct	950 ms	11340 KB	Output is correct
5	Correct	765 ms	11264 KB	Output is correct

Subtask #17
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	817 ms	11252 KB	Output is correct
2	Correct	788 ms	11244 KB	Output is correct
3	Correct	676 ms	11244 KB	Output is correct
4	Correct	946 ms	11248 KB	Output is correct
5	Correct	790 ms	11256 KB	Output is correct

Subtask #18
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	665 ms	12812 KB	Output is correct
2	Correct	876 ms	12820 KB	Output is correct
3	Correct	875 ms	12812 KB	Output is correct
4	Execution timed out	1083 ms	12756 KB	Time limit exceeded
5	Halted	0 ms	0 KB	-

Subtask #19
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	944 ms	12828 KB	Output is correct
2	Correct	913 ms	12808 KB	Output is correct
3	Correct	763 ms	12820 KB	Output is correct
4	Execution timed out	1067 ms	12812 KB	Time limit exceeded
5	Halted	0 ms	0 KB	-

Subtask #20
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	818 ms	15948 KB	Output is correct
2	Execution timed out	1085 ms	15956 KB	Time limit exceeded
3	Halted	0 ms	0 KB	-

Subtask #21
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Execution timed out	1093 ms	15956 KB	Time limit exceeded
2	Halted	0 ms	0 KB	-

답안 #633262

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