답안 #819406

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
819406	2023-08-10T10:34:39 Z	MisterReaper	Mobile (BOI12_mobile)	C++17	100 / 100	354 ms	35268 KB

mobile

// author: MisterReaper (Ahmet Alp Orakci)
#include <bits/stdc++.h>
using namespace std;
#define int long long

#define ONLINE_JUDGE
#ifndef ONLINE_JUDGE
    #include "debug.h"
    #define OPEN freopen(".in", "r", stdin); freopen(".out", "w", stdout);
    #define TIME cerr << "\n" << fixed << setprecision(2) << 1000.0 * clock() / CLOCKS_PER_SEC << " milliseconds ";
#else
    #define debug(...) void(23)
    #define debugarr(...) void(23)
    #define OPEN void(0000)
    #define TIME void(232323233)
#endif

void solve()
{
    int n, m; cin >> n >> m;
    pair <int, int> arr[n];
    for(auto &[a, b] : arr) cin >> a >> b;

    auto check = [&](double mid) -> bool
    {
        double cur = 0;
        for(auto [a, b] : arr)
        {
            double delta = sqrt(mid * mid - b * b);
            if(a - delta <= cur) cur = max(cur, a + delta);
        }

        return m <= cur;
    };

    double l = 1, r = 1.5e9, res = 1;
    while(r - l >= 1e-3)
    {
        double mid = (l + r) / 2;
        if(check(mid))
        {
            r = mid;
            res = mid;
        }
        else l = mid;
    }

    cout << fixed << setprecision(6) << res;
    
    return;
}

int32_t main()
{
    OPEN;

    ios_base::sync_with_stdio(false);
    cin.tie(NULL); cout.tie(NULL);

    int t = 1; //cin >> t;
    while(t--)
    {
        solve();
    }

    TIME;

    return 0;
}

Subtask #1
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	212 KB	Output is correct
2	Correct	0 ms	316 KB	Output is correct
3	Correct	0 ms	212 KB	Output is correct
4	Correct	1 ms	212 KB	Output is correct

Subtask #2
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	256 KB	Output is correct
2	Correct	1 ms	212 KB	Output is correct
3	Correct	0 ms	212 KB	Output is correct
4	Correct	1 ms	212 KB	Output is correct

Subtask #3
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	340 KB	Output is correct
2	Correct	1 ms	276 KB	Output is correct
3	Correct	1 ms	328 KB	Output is correct
4	Correct	1 ms	340 KB	Output is correct

Subtask #4
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	340 KB	Output is correct
2	Correct	2 ms	468 KB	Output is correct
3	Correct	2 ms	336 KB	Output is correct
4	Correct	2 ms	456 KB	Output is correct

Subtask #5
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	340 KB	Output is correct
2	Correct	2 ms	468 KB	Output is correct
3	Correct	2 ms	340 KB	Output is correct
4	Correct	2 ms	468 KB	Output is correct

Subtask #6
5.0 / 5.0

#	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	432 KB	Output is correct
4	Correct	2 ms	456 KB	Output is correct
5	Correct	2 ms	340 KB	Output is correct

Subtask #7
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	24 ms	2256 KB	Output is correct
2	Correct	19 ms	2520 KB	Output is correct
3	Correct	13 ms	1740 KB	Output is correct
4	Correct	25 ms	2624 KB	Output is correct
5	Correct	13 ms	1364 KB	Output is correct

Subtask #8
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	21 ms	2260 KB	Output is correct
2	Correct	21 ms	2164 KB	Output is correct
3	Correct	24 ms	2516 KB	Output is correct
4	Correct	31 ms	2736 KB	Output is correct
5	Correct	31 ms	3056 KB	Output is correct

Subtask #9
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	20 ms	2260 KB	Output is correct
2	Correct	20 ms	2740 KB	Output is correct
3	Correct	24 ms	2508 KB	Output is correct
4	Correct	34 ms	3772 KB	Output is correct
5	Correct	25 ms	2516 KB	Output is correct

Subtask #10
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	26 ms	3404 KB	Output is correct
2	Correct	25 ms	3264 KB	Output is correct
3	Correct	24 ms	2888 KB	Output is correct
4	Correct	35 ms	3784 KB	Output is correct
5	Correct	29 ms	3116 KB	Output is correct

Subtask #11
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	25 ms	3372 KB	Output is correct
2	Correct	26 ms	3264 KB	Output is correct
3	Correct	25 ms	2888 KB	Output is correct
4	Correct	35 ms	3772 KB	Output is correct
5	Correct	30 ms	3028 KB	Output is correct

Subtask #12
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	108 ms	12328 KB	Output is correct
2	Correct	140 ms	15792 KB	Output is correct
3	Correct	123 ms	15276 KB	Output is correct
4	Correct	167 ms	17680 KB	Output is correct
5	Correct	150 ms	14908 KB	Output is correct

Subtask #13
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	130 ms	16316 KB	Output is correct
2	Correct	189 ms	14732 KB	Output is correct
3	Correct	126 ms	13868 KB	Output is correct
4	Correct	171 ms	17336 KB	Output is correct
5	Correct	151 ms	15420 KB	Output is correct

Subtask #14
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	131 ms	14808 KB	Output is correct
2	Correct	154 ms	18888 KB	Output is correct
3	Correct	145 ms	18384 KB	Output is correct
4	Correct	220 ms	21448 KB	Output is correct
5	Correct	181 ms	17668 KB	Output is correct

Subtask #15
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	180 ms	19544 KB	Output is correct
2	Correct	217 ms	17612 KB	Output is correct
3	Correct	148 ms	16520 KB	Output is correct
4	Correct	214 ms	21320 KB	Output is correct
5	Correct	185 ms	18404 KB	Output is correct

Subtask #16
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	150 ms	17260 KB	Output is correct
2	Correct	180 ms	22084 KB	Output is correct
3	Correct	172 ms	21344 KB	Output is correct
4	Correct	238 ms	24772 KB	Output is correct
5	Correct	202 ms	20204 KB	Output is correct

Subtask #17
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	182 ms	22772 KB	Output is correct
2	Correct	259 ms	20484 KB	Output is correct
3	Correct	175 ms	19620 KB	Output is correct
4	Correct	262 ms	24616 KB	Output is correct
5	Correct	216 ms	21376 KB	Output is correct

Subtask #18
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	169 ms	19744 KB	Output is correct
2	Correct	203 ms	25220 KB	Output is correct
3	Correct	193 ms	24436 KB	Output is correct
4	Correct	272 ms	28444 KB	Output is correct
5	Correct	239 ms	23960 KB	Output is correct

Subtask #19
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	213 ms	25996 KB	Output is correct
2	Correct	281 ms	23376 KB	Output is correct
3	Correct	199 ms	22332 KB	Output is correct
4	Correct	280 ms	28160 KB	Output is correct
5	Correct	247 ms	24268 KB	Output is correct

Subtask #20
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	225 ms	24632 KB	Output is correct
2	Correct	255 ms	31424 KB	Output is correct
3	Correct	246 ms	30400 KB	Output is correct
4	Correct	353 ms	35132 KB	Output is correct
5	Correct	319 ms	29396 KB	Output is correct

Subtask #21
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	274 ms	32448 KB	Output is correct
2	Correct	354 ms	29116 KB	Output is correct
3	Correct	267 ms	28240 KB	Output is correct
4	Correct	348 ms	35268 KB	Output is correct
5	Correct	318 ms	30684 KB	Output is correct

답안 #819406

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