oj.uz

Submission #654938

# Submission time Handle Problem Language Result Execution time Memory
654938 2022-11-02T06:15:32 Z Koful123 Mobile (BOI12_mobile) C++17
0 / 100
 1000 ms 31572 KB 
#include <bits/stdc++.h>
using namespace std;
#define int long long
#define double long double
//#define endl "\n"
#define pb push_back
#define ff first
#define ss second
#define mod 1000000007
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()

const double eps = 0.0000000000000001;

double dis(pair<double,double> x,pair<double,double> y){
	return sqrt(pow(x.ff - y.ff,2) + pow(x.ss - y.ss,2));
}

void solve(){

	double n,k;
	cin >> n >> k;

	vector<pair<double,double>> v(n);
	for(auto &[x,y] : v){
		cin >> x >> y;
	}

	auto check = [&](double m,double i,int ty){
		double d = 1e18,e = 1e18;
		for(int j=0;j<i;j++){
			d = min(d,dis({m,0},v[j]));
		}
		for(int j=i;j<n;j++){
			e = min(e,dis({m,0},v[j]));	
		}
		return (ty ? d : d <= e);
	};

	double ans = 0;
	for(int i=1;i<n;i++){
		double l = 0,r = k;
		for(int j=1;j<=20;j++){
			double m = (l + r + eps) / 2;
			if(check(m,i,0)) l = m;
			else r = m - eps;
		}
		ans = max(ans,check(l,i,1));
	}

	cout << fixed << setprecision(10);
	cout << ans << endl;
}	

signed main(){

	ios::sync_with_stdio(0);
	cin.tie(0);

	int t = 1;
//	cin >> t;

	while(t--)
		solve();

	return 0;
}

Subtask #1
0 / 4.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 4.0

# Verdict Execution time Memory Grader output
1 Incorrect 3 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 4.0

# Verdict Execution time Memory Grader output
1 Incorrect 792 ms 408 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 4.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1090 ms 468 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #5
0 / 4.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1098 ms 468 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #6
0 / 5.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1093 ms 468 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #7
0 / 5.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1054 ms 2644 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #8
0 / 5.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1069 ms 2772 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #9
0 / 5.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1092 ms 3028 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #10
0 / 5.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1082 ms 3412 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #11
0 / 5.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1089 ms 3412 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #12
0 / 5.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1062 ms 15956 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #13
0 / 5.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1069 ms 15956 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #14
0 / 5.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1061 ms 19028 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #15
0 / 5.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1076 ms 19028 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #16
0 / 5.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1101 ms 22228 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #17
0 / 5.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1095 ms 22204 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #18
0 / 5.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1098 ms 25320 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #19
0 / 5.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1092 ms 25368 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #20
0 / 5.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1090 ms 31572 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #21
0 / 5.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1100 ms 31548 KB Time limit exceeded
2 Halted 0 ms 0 KB -