답안 #973949

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
973949	2024-05-02T13:19:09 Z	andrewp	Mobile (BOI12_mobile)	C++17	50 / 100	52 ms	3520 KB

mobile

//Dedicated to my love,ivaziva
#pragma GCC optimize("Ofast")
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define dbg(x) cerr<<#x<<": "<<x<<endl;
#define pb push_back
#define fi first
#define se second
#define mp make_pair
#define mt make_tuple
#define pii pair<int,int>
#define pll pair<ll,ll>
#define ldb double
const ll inf=(ll)1e18+5;
const int mod=1e9+7;
const int K=512;
const int L=30;
const int N=1e5+1;
int n,l;
pll a[N];
int main()
{
    ios_base::sync_with_stdio(false);
	cin.tie(0);
	cout.tie(0);
	cin>>n>>l;
	for(int i=0;i<n;i++) cin>>a[i].fi>>a[i].se;
	ldb bot=1.00,top=(ldb)1.5e9;
	while(top-bot>0.0000001)
    {
		ldb mid=(bot+top)/2,calc=0;
		for(int i=0;i<n;i++)
		{
			ldb razl=sqrt((ldb)(mid*mid)-(ldb)(a[i].se*a[i].se));
			ldb x=(ldb)a[i].fi-razl;
			ldb y=(ldb)a[i].fi+razl;
			if(x<=calc)
            {
                calc=max(calc,y);
            }
		}
		if(calc>=l) top=mid;
		else bot=mid;
	}
	cout<<fixed<<setprecision(6)<<bot;
    return 0;
}

Subtask #1
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	348 KB	Output is correct
2	Correct	0 ms	468 KB	Output is correct
3	Correct	1 ms	464 KB	Output is correct
4	Correct	0 ms	344 KB	Output is correct

Subtask #2
4.0 / 4.0

#	결과	메모리	Grader output
1	Correct	348 KB	Output is correct
2	Correct	468 KB	Output is correct
3	Correct	348 KB	Output is correct
4	Correct	348 KB	Output is correct

Subtask #3
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	348 KB	Output is correct
2	Correct	1 ms	348 KB	Output is correct
3	Correct	1 ms	348 KB	Output is correct
4	Correct	1 ms	432 KB	Output is correct

Subtask #4
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	348 KB	Output is correct
2	Correct	2 ms	604 KB	Output is correct
3	Correct	2 ms	348 KB	Output is correct
4	Correct	3 ms	604 KB	Output is correct

Subtask #5
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	344 KB	Output is correct
2	Correct	2 ms	604 KB	Output is correct
3	Correct	2 ms	348 KB	Output is correct
4	Correct	2 ms	604 KB	Output is correct

Subtask #6
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	348 KB	Output is correct
2	Correct	2 ms	604 KB	Output is correct
3	Correct	2 ms	348 KB	Output is correct
4	Correct	3 ms	604 KB	Output is correct
5	Correct	2 ms	348 KB	Output is correct

Subtask #7
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	35 ms	2648 KB	Output is correct
2	Correct	23 ms	2384 KB	Output is correct
3	Correct	16 ms	1628 KB	Output is correct
4	Correct	29 ms	2384 KB	Output is correct
5	Correct	15 ms	1628 KB	Output is correct

Subtask #8
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	31 ms	2164 KB	Output is correct
2	Correct	27 ms	2140 KB	Output is correct
3	Correct	33 ms	2392 KB	Output is correct
4	Correct	39 ms	2396 KB	Output is correct
5	Correct	34 ms	2768 KB	Output is correct

Subtask #9
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	22 ms	2136 KB	Output is correct
2	Correct	24 ms	2496 KB	Output is correct
3	Correct	24 ms	2396 KB	Output is correct
4	Correct	41 ms	3164 KB	Output is correct
5	Correct	37 ms	2600 KB	Output is correct

Subtask #10
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	29 ms	2908 KB	Output is correct
2	Correct	29 ms	2904 KB	Output is correct
3	Correct	28 ms	2792 KB	Output is correct
4	Correct	52 ms	3520 KB	Output is correct
5	Correct	35 ms	2648 KB	Output is correct

Subtask #11
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	33 ms	2904 KB	Output is correct
2	Correct	28 ms	2908 KB	Output is correct
3	Correct	28 ms	2652 KB	Output is correct
4	Correct	41 ms	3152 KB	Output is correct
5	Correct	49 ms	2764 KB	Output is correct

Subtask #12
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Incorrect	10 ms	2672 KB	Output isn't correct
2	Halted	0 ms	0 KB	-

Subtask #13
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Incorrect	15 ms	3216 KB	Output isn't correct
2	Halted	0 ms	0 KB	-

Subtask #14
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Incorrect	10 ms	2652 KB	Output isn't correct
2	Halted	0 ms	0 KB	-

Subtask #15
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Incorrect	14 ms	3240 KB	Output isn't correct
2	Halted	0 ms	0 KB	-

Subtask #16
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Incorrect	10 ms	2652 KB	Output isn't correct
2	Halted	0 ms	0 KB	-

Subtask #17
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Incorrect	17 ms	3292 KB	Output isn't correct
2	Halted	0 ms	0 KB	-

Subtask #18
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Incorrect	16 ms	2784 KB	Output isn't correct
2	Halted	0 ms	0 KB	-

Subtask #19
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Incorrect	22 ms	3152 KB	Output isn't correct
2	Halted	0 ms	0 KB	-

Subtask #20
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Incorrect	11 ms	2652 KB	Output isn't correct
2	Halted	0 ms	0 KB	-

Subtask #21
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Incorrect	17 ms	3292 KB	Output isn't correct
2	Halted	0 ms	0 KB	-

답안 #973949

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