답안 #639140

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
639140	2022-09-08T17:22:04 Z	luanaamorim	Mobile (BOI12_mobile)	C++14	100 / 100	943 ms	30712 KB

mobile

#include <iostream>
#include <queue>
#include <string>
#include <algorithm>
#include <vector>
#include <cmath>
#include <iomanip>
#include <map>
#include <cstring>
#include <set>
#include <stack>
#include <bitset>
#define dbug(x) cout << (#x) << " -> " << x << endl
#define ll long long
#define INF (2e9 + 5)
#define MAX (int) (2e6 + 5)
#define MOD 1000000007
#define par pair<int, int>
#define all(v) v.begin(), v.end()
#define sz(x) (int) ((x).size())
#define esq(x) (x<<1)
#define dir(x) ((x<<1)|1)
#define lsb(x) (x & -x)
#define W(x) cout << #x << ": " << x << endl
#define Wii(x) cout << x.first << ' ' << x.second << endl
#define _ ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
#define ERR 1e-9

using namespace std;

double l, n, a[MAX], b[MAX];

int check(double raio)
{
	double fim = 0;
	for (int i = 0; i < n; i++)
	{
		if (raio < b[i]) continue;
		double prox_fim = a[i] + (sqrt((raio*raio) - (b[i]*b[i])));
		double prox_ini = a[i] - (sqrt((raio*raio) - (b[i]*b[i])));
		if (prox_ini <= fim) fim = max(prox_fim, fim);
	}

	return (fim >= l);
}

int main()
{_
	cin >> n >> l;
	for (int i = 0; i < n; i++)
		cin >> a[i] >> b[i];

	int cnt = 45;
	double meio, ini = 0, fim = INF;
	while (cnt--)
	{
		meio = (ini+fim)/2;
		if (check(meio)) fim = meio;
		else ini = meio;
	}

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

Subtask #1
4.0 / 4.0

#	결과	메모리	Grader output
1	Correct	340 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	1 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	348 KB	Output is correct
2	Correct	3 ms	340 KB	Output is correct
3	Correct	3 ms	340 KB	Output is correct
4	Correct	6 ms	392 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	340 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	416 KB	Output is correct
3	Correct	3 ms	340 KB	Output is correct
4	Correct	4 ms	340 KB	Output is correct
5	Correct	5 ms	424 KB	Output is correct

Subtask #7
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	45 ms	1484 KB	Output is correct
2	Correct	49 ms	1484 KB	Output is correct
3	Correct	33 ms	1160 KB	Output is correct
4	Correct	65 ms	1388 KB	Output is correct
5	Correct	30 ms	1112 KB	Output is correct

Subtask #8
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	44 ms	1492 KB	Output is correct
2	Correct	54 ms	1364 KB	Output is correct
3	Correct	63 ms	1540 KB	Output is correct
4	Correct	69 ms	1556 KB	Output is correct
5	Correct	76 ms	1676 KB	Output is correct

Subtask #9
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	41 ms	1612 KB	Output is correct
2	Correct	47 ms	1492 KB	Output is correct
3	Correct	47 ms	1616 KB	Output is correct
4	Correct	94 ms	1872 KB	Output is correct
5	Correct	58 ms	1716 KB	Output is correct

Subtask #10
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	62 ms	1884 KB	Output is correct
2	Correct	60 ms	1800 KB	Output is correct
3	Correct	50 ms	1848 KB	Output is correct
4	Correct	98 ms	1912 KB	Output is correct
5	Correct	75 ms	1816 KB	Output is correct

Subtask #11
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	64 ms	1776 KB	Output is correct
2	Correct	61 ms	1820 KB	Output is correct
3	Correct	50 ms	1820 KB	Output is correct
4	Correct	98 ms	1832 KB	Output is correct
5	Correct	78 ms	1800 KB	Output is correct

Subtask #12
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	245 ms	8120 KB	Output is correct
2	Correct	299 ms	8148 KB	Output is correct
3	Correct	285 ms	8140 KB	Output is correct
4	Correct	469 ms	8064 KB	Output is correct
5	Correct	402 ms	8152 KB	Output is correct

Subtask #13
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	328 ms	8148 KB	Output is correct
2	Correct	335 ms	8148 KB	Output is correct
3	Correct	248 ms	8140 KB	Output is correct
4	Correct	458 ms	8148 KB	Output is correct
5	Correct	406 ms	8140 KB	Output is correct

Subtask #14
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	294 ms	9828 KB	Output is correct
2	Correct	354 ms	9720 KB	Output is correct
3	Correct	342 ms	9712 KB	Output is correct
4	Correct	576 ms	9660 KB	Output is correct
5	Correct	470 ms	9724 KB	Output is correct

Subtask #15
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	362 ms	9628 KB	Output is correct
2	Correct	385 ms	9704 KB	Output is correct
3	Correct	302 ms	9712 KB	Output is correct
4	Correct	571 ms	9736 KB	Output is correct
5	Correct	481 ms	9712 KB	Output is correct

Subtask #16
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	355 ms	11272 KB	Output is correct
2	Correct	413 ms	11168 KB	Output is correct
3	Correct	408 ms	11180 KB	Output is correct
4	Correct	655 ms	11400 KB	Output is correct
5	Correct	548 ms	11320 KB	Output is correct

Subtask #17
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	445 ms	11212 KB	Output is correct
2	Correct	441 ms	11284 KB	Output is correct
3	Correct	359 ms	11212 KB	Output is correct
4	Correct	655 ms	11284 KB	Output is correct
5	Correct	560 ms	11280 KB	Output is correct

Subtask #18
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	394 ms	12840 KB	Output is correct
2	Correct	490 ms	12896 KB	Output is correct
3	Correct	472 ms	12728 KB	Output is correct
4	Correct	801 ms	12844 KB	Output is correct
5	Correct	646 ms	12844 KB	Output is correct

Subtask #19
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	513 ms	12840 KB	Output is correct
2	Correct	497 ms	12756 KB	Output is correct
3	Correct	405 ms	12776 KB	Output is correct
4	Correct	750 ms	12844 KB	Output is correct
5	Correct	642 ms	12896 KB	Output is correct

Subtask #20
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	491 ms	15976 KB	Output is correct
2	Correct	587 ms	16016 KB	Output is correct
3	Correct	579 ms	15924 KB	Output is correct
4	Correct	940 ms	15980 KB	Output is correct
5	Correct	785 ms	29644 KB	Output is correct

Subtask #21
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	603 ms	15960 KB	Output is correct
2	Correct	620 ms	15952 KB	Output is correct
3	Correct	538 ms	15868 KB	Output is correct
4	Correct	943 ms	16036 KB	Output is correct
5	Correct	813 ms	30712 KB	Output is correct

답안 #639140

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