답안 #1026853

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1026853	2024-07-18T12:24:12 Z	peyman_sf	Mobile (BOI12_mobile)	C++17	0 / 100	961 ms	21432 KB

mobile

#include <iostream>
#include <fstream>
#include <iomanip>
#include <stack>
#include <cmath>
#include <cstring>
#include <algorithm>
#include <vector>
#include <string>
#include <map>
#include <set>
#include <deque>
#include <queue>


#define FastIO ios_base::sync_with_stdio(false); cin.tie(NULL);
#define fileTesting ifstream fileIn("input.txt"); cin.rdbuf(fileIn.rdbuf()); ofstream fileOut("output.txt"); cout.rdbuf(fileOut.rdbuf());
#define endl '\n'
#define print(x) for (auto i : x) cout << i << ' '; cout << endl
#define nloop(a, n) for (ll i = a; i < n; i++)
#define debug(x) cerr << #x << " is " << x << endl
#define all(x) (x).begin(), (x).end()
#define pb push_back
#define ff first
#define ss second

using namespace std;
typedef long long ll;
typedef long double ld;
typedef vector<ll> vll;
typedef vector<ld> vld;
typedef pair<int, int> pii;
typedef pair<ld, ld> pld;

const ll maxN = 1e9;
const ll mod = 1e9 + 7;

ll gcd(ll a, ll b) { if (b == 0) return a; return gcd(b, a % b);}
ll lcm(ll a, ll b) { return (a * b) / gcd(a, b); }

ll n, len;
vector<pii> points;

ld check(ld r) {
    ld cl = 0, cr = 0;
    for (auto &p : points)
    {
        ld d = sqrt(pow(r, 2) - pow(p.second, 2));
        if (p.first - d > cr)
            return 0;

        else {
            cl = min(cl, p.first - d);
            cr = max(cr, p.first + d);
        }
    }

    if (cl <= 0 && cr >= len)
        return 1;

    return 0;
}

void solution() {
    cin >> n >> len;

    for (ll i = 0; i < n; i++) {
        ll x, y;
        cin >> x >> y;
        points.push_back(make_pair(x, y));
    }

    ld l = 0, r = len + 1, m;
    for (ll i = 0; i < 60; i++) {
        m = (l + r) / 2;
        if (check(m))
            r = m;
        
        else
            l = m;
    }

    cout << fixed << setprecision(6) << r << endl;
}

int main() {
    FastIO
    ll t = 1;
    // cin >> t;
    while (t--) {
        solution();
    }
    return 0;
}

Subtask #1
0 / 4.0

#	결과	메모리	Grader output
1	Correct	600 KB	Output is correct
2	Correct	348 KB	Output is correct
3	Incorrect	348 KB	Output isn't correct
4	Halted	0 KB	-

Subtask #2
0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	344 KB	Output is correct
2	Correct	0 ms	384 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Incorrect	1 ms	344 KB	Output isn't correct
5	Halted	0 ms	0 KB	-

Subtask #3
0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Incorrect	3 ms	348 KB	Output isn't correct
2	Halted	0 ms	0 KB	-

Subtask #4
0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Incorrect	6 ms	348 KB	Output isn't correct
2	Halted	0 ms	0 KB	-

Subtask #5
0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	5 ms	348 KB	Output is correct
2	Correct	2 ms	564 KB	Output is correct
3	Incorrect	2 ms	348 KB	Output isn't correct
4	Halted	0 ms	0 KB	-

Subtask #6
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Incorrect	4 ms	348 KB	Output isn't correct
2	Halted	0 ms	0 KB	-

Subtask #7
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Incorrect	87 ms	1516 KB	Output isn't correct
2	Halted	0 ms	0 KB	-

Subtask #8
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Incorrect	110 ms	1392 KB	Output isn't correct
2	Halted	0 ms	0 KB	-

Subtask #9
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	45 ms	1500 KB	Output is correct
2	Incorrect	28 ms	1496 KB	Output isn't correct
3	Halted	0 ms	0 KB	-

Subtask #10
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Incorrect	25 ms	1540 KB	Output isn't correct
2	Halted	0 ms	0 KB	-

Subtask #11
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	47 ms	1500 KB	Output is correct
2	Incorrect	31 ms	1500 KB	Output isn't correct
3	Halted	0 ms	0 KB	-

Subtask #12
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	259 ms	5344 KB	Output is correct
2	Correct	167 ms	5640 KB	Output is correct
3	Correct	158 ms	11472 KB	Output is correct
4	Incorrect	740 ms	13916 KB	Output isn't correct
5	Halted	0 ms	0 KB	-

Subtask #13
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	118 ms	4812 KB	Output is correct
2	Incorrect	605 ms	10932 KB	Output isn't correct
3	Halted	0 ms	0 KB	-

Subtask #14
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	316 ms	9660 KB	Output is correct
2	Incorrect	239 ms	9696 KB	Output isn't correct
3	Halted	0 ms	0 KB	-

Subtask #15
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	184 ms	10288 KB	Output is correct
2	Incorrect	735 ms	17432 KB	Output isn't correct
3	Halted	0 ms	0 KB	-

Subtask #16
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	347 ms	9292 KB	Output is correct
2	Incorrect	181 ms	8896 KB	Output isn't correct
3	Halted	0 ms	0 KB	-

Subtask #17
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	186 ms	9916 KB	Output is correct
2	Incorrect	778 ms	16332 KB	Output isn't correct
3	Halted	0 ms	0 KB	-

Subtask #18
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	364 ms	8892 KB	Output is correct
2	Incorrect	188 ms	10684 KB	Output isn't correct
3	Halted	0 ms	0 KB	-

Subtask #19
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	203 ms	10428 KB	Output is correct
2	Incorrect	916 ms	17996 KB	Output isn't correct
3	Halted	0 ms	0 KB	-

Subtask #20
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	429 ms	10692 KB	Output is correct
2	Incorrect	256 ms	10688 KB	Output isn't correct
3	Halted	0 ms	0 KB	-

Subtask #21
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	225 ms	10692 KB	Output is correct
2	Incorrect	961 ms	21432 KB	Output isn't correct
3	Halted	0 ms	0 KB	-

답안 #1026853

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