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Submission #973944

# Submission time Handle Problem Language Result Execution time Memory
973944 2024-05-02T13:16:22 Z andrewp Mobile (BOI12_mobile) C++14
50 / 100
 47 ms 2224 KB 
//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,top=(ldb)1.5e9;
	while(top-bot>0.000001)
    {
		ldb mid=(bot+top)/2.0;
		ldb calc=0;
		for(int i=0;i<n;i++)
		{
			ldb razl=sqrt(mid*mid-(ldb)(a[i].se*a[i].se));
			ldb x=a[i].fi-razl;
			ldb y=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

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct

Subtask #2
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct

Subtask #3
4.0 / 4.0

# Verdict Execution time Memory 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 348 KB Output is correct

Subtask #4
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 344 KB Output is correct
2 Correct 2 ms 344 KB Output is correct
3 Correct 2 ms 348 KB Output is correct
4 Correct 2 ms 348 KB Output is correct

Subtask #5
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 344 KB Output is correct
2 Correct 2 ms 348 KB Output is correct
3 Correct 2 ms 348 KB Output is correct
4 Correct 2 ms 348 KB Output is correct

Subtask #6
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 348 KB Output is correct
2 Correct 2 ms 348 KB Output is correct
3 Correct 2 ms 348 KB Output is correct
4 Correct 3 ms 348 KB Output is correct
5 Correct 2 ms 344 KB Output is correct

Subtask #7
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 39 ms 1628 KB Output is correct
2 Correct 21 ms 1624 KB Output is correct
3 Correct 16 ms 1116 KB Output is correct
4 Correct 36 ms 1876 KB Output is correct
5 Correct 15 ms 1112 KB Output is correct

Subtask #8
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 26 ms 1664 KB Output is correct
2 Correct 25 ms 1372 KB Output is correct
3 Correct 28 ms 1628 KB Output is correct
4 Correct 29 ms 1628 KB Output is correct
5 Correct 33 ms 1624 KB Output is correct

Subtask #9
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 21 ms 1628 KB Output is correct
2 Correct 31 ms 2224 KB Output is correct
3 Correct 23 ms 1628 KB Output is correct
4 Correct 41 ms 1884 KB Output is correct
5 Correct 29 ms 1628 KB Output is correct

Subtask #10
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 28 ms 2016 KB Output is correct
2 Correct 26 ms 1884 KB Output is correct
3 Correct 27 ms 1884 KB Output is correct
4 Correct 40 ms 1884 KB Output is correct
5 Correct 38 ms 2136 KB Output is correct

Subtask #11
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 28 ms 1884 KB Output is correct
2 Correct 28 ms 1880 KB Output is correct
3 Correct 27 ms 1880 KB Output is correct
4 Correct 47 ms 1996 KB Output is correct
5 Correct 41 ms 2004 KB Output is correct

Subtask #12
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 10 ms 1884 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #13
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 15 ms 1884 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #14
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 11 ms 1884 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #15
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 14 ms 1880 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #16
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 10 ms 1884 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #17
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 18 ms 1880 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #18
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 11 ms 1884 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #19
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 15 ms 1880 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #20
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 10 ms 1892 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #21
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 15 ms 1884 KB Output isn't correct
2 Halted 0 ms 0 KB -