답안 #633266

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
633266	2022-08-22T02:53:12 Z	afatpotato	Mobile (BOI12_mobile)	C++14	100 / 100	920 ms	35292 KB

mobile

#include <bits/stdc++.h>

using namespace std;



pair<long long, long long> tower[1000000];
long long n, l;

int main() {
    cin >> n >> l;
    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

#	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	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 #3
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	340 KB	Output is correct
2	Correct	2 ms	224 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	4 ms	340 KB	Output is correct
2	Correct	4 ms	340 KB	Output is correct
3	Correct	4 ms	340 KB	Output is correct
4	Correct	5 ms	376 KB	Output is correct

Subtask #5
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	4 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	6 ms	328 KB	Output is correct

Subtask #6
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	4 ms	376 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	376 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	52 ms	1388 KB	Output is correct
2	Correct	54 ms	1484 KB	Output is correct
3	Correct	36 ms	1108 KB	Output is correct
4	Correct	59 ms	1560 KB	Output is correct
5	Correct	26 ms	1044 KB	Output is correct

Subtask #8
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	49 ms	1612 KB	Output is correct
2	Correct	45 ms	1356 KB	Output is correct
3	Correct	56 ms	1444 KB	Output is correct
4	Correct	68 ms	1504 KB	Output is correct
5	Correct	88 ms	1740 KB	Output is correct

Subtask #9
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	42 ms	1680 KB	Output is correct
2	Correct	59 ms	1532 KB	Output is correct
3	Correct	55 ms	1552 KB	Output is correct
4	Correct	92 ms	1752 KB	Output is correct
5	Correct	56 ms	1680 KB	Output is correct

Subtask #10
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	72 ms	1784 KB	Output is correct
2	Correct	65 ms	1820 KB	Output is correct
3	Correct	67 ms	1924 KB	Output is correct
4	Correct	92 ms	1800 KB	Output is correct
5	Correct	68 ms	1740 KB	Output is correct

Subtask #11
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	72 ms	1736 KB	Output is correct
2	Correct	74 ms	1944 KB	Output is correct
3	Correct	56 ms	1752 KB	Output is correct
4	Correct	93 ms	1888 KB	Output is correct
5	Correct	68 ms	1740 KB	Output is correct

Subtask #12
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	256 ms	8032 KB	Output is correct
2	Correct	356 ms	8220 KB	Output is correct
3	Correct	337 ms	8012 KB	Output is correct
4	Correct	437 ms	8116 KB	Output is correct
5	Correct	396 ms	8064 KB	Output is correct

Subtask #13
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	372 ms	8232 KB	Output is correct
2	Correct	404 ms	8112 KB	Output is correct
3	Correct	312 ms	8200 KB	Output is correct
4	Correct	448 ms	8236 KB	Output is correct
5	Correct	407 ms	8112 KB	Output is correct

Subtask #14
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	332 ms	9680 KB	Output is correct
2	Correct	440 ms	9676 KB	Output is correct
3	Correct	421 ms	9692 KB	Output is correct
4	Correct	577 ms	9696 KB	Output is correct
5	Correct	447 ms	9692 KB	Output is correct

Subtask #15
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	468 ms	9788 KB	Output is correct
2	Correct	467 ms	9672 KB	Output is correct
3	Correct	369 ms	9684 KB	Output is correct
4	Correct	541 ms	9676 KB	Output is correct
5	Correct	512 ms	9604 KB	Output is correct

Subtask #16
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	370 ms	11196 KB	Output is correct
2	Correct	509 ms	11256 KB	Output is correct
3	Correct	499 ms	11136 KB	Output is correct
4	Correct	676 ms	11260 KB	Output is correct
5	Correct	485 ms	11340 KB	Output is correct

Subtask #17
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	552 ms	11184 KB	Output is correct
2	Correct	558 ms	11132 KB	Output is correct
3	Correct	468 ms	11288 KB	Output is correct
4	Correct	635 ms	11184 KB	Output is correct
5	Correct	538 ms	11124 KB	Output is correct

Subtask #18
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	410 ms	12812 KB	Output is correct
2	Correct	580 ms	12804 KB	Output is correct
3	Correct	531 ms	12824 KB	Output is correct
4	Correct	762 ms	12880 KB	Output is correct
5	Correct	598 ms	24088 KB	Output is correct

Subtask #19
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	574 ms	12796 KB	Output is correct
2	Correct	677 ms	12796 KB	Output is correct
3	Correct	497 ms	12748 KB	Output is correct
4	Correct	719 ms	12772 KB	Output is correct
5	Correct	588 ms	24304 KB	Output is correct

Subtask #20
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	530 ms	15952 KB	Output is correct
2	Correct	705 ms	15988 KB	Output is correct
3	Correct	678 ms	30484 KB	Output is correct
4	Correct	893 ms	35212 KB	Output is correct
5	Correct	741 ms	29640 KB	Output is correct

Subtask #21
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	748 ms	15944 KB	Output is correct
2	Correct	794 ms	29172 KB	Output is correct
3	Correct	616 ms	28184 KB	Output is correct
4	Correct	920 ms	35292 KB	Output is correct
5	Correct	762 ms	30712 KB	Output is correct

답안 #633266

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