답안 #708967

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
708967	2023-03-12T22:35:35 Z	mmaiti	Mobile (BOI12_mobile)	C++11	100 / 100	984 ms	35424 KB

mobile

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

vector<pair<long long, long long>> coords;

double eps = 1e-3;
int N, L;
bool not_works(double val)
{
    double curr = 0;
    for(int i = 0; i < N; i++)
    {
        double temp_begin = coords[i].first - sqrt(val*val - coords[i].second*coords[i].second);
        double temp_end = coords[i].first + sqrt(val*val - coords[i].second*coords[i].second);

        if(temp_begin <= curr)
        curr = max(curr, temp_end);
    }
    if(curr >= L)
    return true;
    else
    return false;
}
int main()
{
    
    cin >> N >> L;
    coords.resize(N);

    for(int i = 0; i < N; i++)
    {
        cin >> coords[i].first >> coords[i].second;
    }

    double lo = 1;
    double hi = 1.5e9;
    double mid;

    while(abs(hi-lo) > eps)
    {
        mid = (lo + hi)/2;
        if(not_works(mid))
        hi = mid;
        else
        lo = mid;
    }
    
    cout << fixed << setprecision(4) << lo << "\n";
}

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	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

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	340 KB	Output is correct
2	Correct	2 ms	212 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

#	결과	실행 시간	메모리	Grader output
1	Correct	4 ms	376 KB	Output is correct
2	Correct	4 ms	340 KB	Output is correct
3	Correct	3 ms	424 KB	Output is correct
4	Correct	5 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	4 ms	340 KB	Output is correct
3	Correct	3 ms	416 KB	Output is correct
4	Correct	5 ms	340 KB	Output is correct

Subtask #6
5.0 / 5.0

#	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	5 ms	444 KB	Output is correct
5	Correct	4 ms	416 KB	Output is correct

Subtask #7
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	57 ms	1464 KB	Output is correct
2	Correct	50 ms	1492 KB	Output is correct
3	Correct	34 ms	1756 KB	Output is correct
4	Correct	69 ms	2628 KB	Output is correct
5	Correct	27 ms	1464 KB	Output is correct

Subtask #8
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	51 ms	1492 KB	Output is correct
2	Correct	50 ms	1396 KB	Output is correct
3	Correct	63 ms	1564 KB	Output is correct
4	Correct	67 ms	2680 KB	Output is correct
5	Correct	80 ms	3020 KB	Output is correct

Subtask #9
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	44 ms	1664 KB	Output is correct
2	Correct	55 ms	1492 KB	Output is correct
3	Correct	53 ms	2512 KB	Output is correct
4	Correct	100 ms	3764 KB	Output is correct
5	Correct	63 ms	2612 KB	Output is correct

Subtask #10
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	75 ms	1856 KB	Output is correct
2	Correct	71 ms	3268 KB	Output is correct
3	Correct	60 ms	2876 KB	Output is correct
4	Correct	101 ms	3776 KB	Output is correct
5	Correct	75 ms	3012 KB	Output is correct

Subtask #11
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	73 ms	1876 KB	Output is correct
2	Correct	69 ms	3276 KB	Output is correct
3	Correct	63 ms	2896 KB	Output is correct
4	Correct	98 ms	3764 KB	Output is correct
5	Correct	78 ms	3012 KB	Output is correct

Subtask #12
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	266 ms	8124 KB	Output is correct
2	Correct	360 ms	15800 KB	Output is correct
3	Correct	353 ms	15288 KB	Output is correct
4	Correct	592 ms	17696 KB	Output is correct
5	Correct	393 ms	15072 KB	Output is correct

Subtask #13
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	362 ms	8112 KB	Output is correct
2	Correct	437 ms	14988 KB	Output is correct
3	Correct	316 ms	13868 KB	Output is correct
4	Correct	477 ms	17500 KB	Output is correct
5	Correct	414 ms	15540 KB	Output is correct

Subtask #14
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	303 ms	9680 KB	Output is correct
2	Correct	419 ms	18900 KB	Output is correct
3	Correct	413 ms	18388 KB	Output is correct
4	Correct	609 ms	21708 KB	Output is correct
5	Correct	462 ms	17604 KB	Output is correct

Subtask #15
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	450 ms	9684 KB	Output is correct
2	Correct	523 ms	17736 KB	Output is correct
3	Correct	408 ms	16524 KB	Output is correct
4	Correct	599 ms	21424 KB	Output is correct
5	Correct	498 ms	18412 KB	Output is correct

Subtask #16
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	368 ms	11244 KB	Output is correct
2	Correct	505 ms	22220 KB	Output is correct
3	Correct	490 ms	21348 KB	Output is correct
4	Correct	675 ms	24676 KB	Output is correct
5	Correct	547 ms	20352 KB	Output is correct

Subtask #17
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	530 ms	11252 KB	Output is correct
2	Correct	607 ms	20580 KB	Output is correct
3	Correct	456 ms	19640 KB	Output is correct
4	Correct	676 ms	24660 KB	Output is correct
5	Correct	571 ms	21352 KB	Output is correct

Subtask #18
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	422 ms	12820 KB	Output is correct
2	Correct	579 ms	25236 KB	Output is correct
3	Correct	543 ms	24460 KB	Output is correct
4	Correct	771 ms	28484 KB	Output is correct
5	Correct	633 ms	23980 KB	Output is correct

Subtask #19
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	598 ms	12828 KB	Output is correct
2	Correct	672 ms	23308 KB	Output is correct
3	Correct	515 ms	22348 KB	Output is correct
4	Correct	770 ms	28308 KB	Output is correct
5	Correct	663 ms	24396 KB	Output is correct

Subtask #20
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	540 ms	15956 KB	Output is correct
2	Correct	725 ms	31692 KB	Output is correct
3	Correct	699 ms	30544 KB	Output is correct
4	Correct	984 ms	35172 KB	Output is correct
5	Correct	776 ms	29648 KB	Output is correct

Subtask #21
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	740 ms	15956 KB	Output is correct
2	Correct	829 ms	29252 KB	Output is correct
3	Correct	653 ms	28244 KB	Output is correct
4	Correct	984 ms	35424 KB	Output is correct
5	Correct	821 ms	30800 KB	Output is correct

답안 #708967

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