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Submission #168809

# Submission time Handle Problem Language Result Execution time Memory
168809 2019-12-16T14:53:14 Z MohamedAhmed04 Mobile (BOI12_mobile) C++14
12 / 100
 1000 ms 8964 KB 
#include <bits/stdc++.h>

using namespace std ;

const int MAX = 1e5 + 10 ;
long double x[MAX] , y[MAX] ;
int n ;
long double l;

bool check(long double radius)
{
	long double now = 0.00 ;
	for(int i = 0 ; i < n ; ++i)
	{
		long double a = sqrt(radius * radius - ((-y[i]) * (-y[i]))) + x[i] ;
		long double b = -sqrt(radius * radius - ((-y[i]) * (-y[i]))) + x[i] ;
		if(a > b)
			swap(a , b) ;
		if(a <= now)
			now = max(now , b) ;

	}
	return (now >= l) ;
}

int main()
{
	ios_base::sync_with_stdio(0) ;
	cin.tie(0) ;
	cin>>n>>l ;
	for(int i = 0 ; i < n ; ++i)
		cin>>x[i]>>y[i] ;
	long double low = 0.000 , high = 1e12 ;
	long double ans = high ;
	for(int i = 0 ; i < 300 ; ++i)
	{
		long double mid = (low + high) / 2.00 ;
		if(check(mid))
			ans = mid , high = mid ;
		else
			low = mid ;
	}
	return cout<<fixed<<setprecision(6)<<ans<<"\n" , 0 ;
}

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 504 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 3 ms 376 KB Output is correct
4 Correct 5 ms 376 KB Output is correct

Subtask #2
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 37 ms 376 KB Output is correct
2 Correct 35 ms 376 KB Output is correct
3 Correct 3 ms 376 KB Output is correct
4 Correct 3 ms 376 KB Output is correct

Subtask #3
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 671 ms 500 KB Output is correct
2 Correct 59 ms 496 KB Output is correct
3 Correct 489 ms 508 KB Output is correct
4 Correct 10 ms 504 KB Output is correct

Subtask #4
0 / 4.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1075 ms 632 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 1093 ms 504 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #6
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 30 ms 504 KB Output is correct
2 Correct 20 ms 624 KB Output is correct
3 Correct 389 ms 632 KB Output is correct
4 Execution timed out 1073 ms 632 KB Time limit exceeded
5 Halted 0 ms 0 KB -

Subtask #7
0 / 5.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1073 ms 3448 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 1077 ms 3576 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #9
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 307 ms 3848 KB Output is correct
2 Correct 292 ms 4088 KB Output is correct
3 Execution timed out 1073 ms 3960 KB Time limit exceeded
4 Halted 0 ms 0 KB -

Subtask #10
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 359 ms 4984 KB Output is correct
2 Correct 358 ms 4984 KB Output is correct
3 Execution timed out 1081 ms 4472 KB Time limit exceeded
4 Halted 0 ms 0 KB -

Subtask #11
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 348 ms 4988 KB Output is correct
2 Correct 359 ms 5104 KB Output is correct
3 Execution timed out 1079 ms 4472 KB Time limit exceeded
4 Halted 0 ms 0 KB -

Subtask #12
0 / 5.0

# Verdict Execution time Memory Grader output
1 Runtime error 56 ms 7808 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #13
0 / 5.0

# Verdict Execution time Memory Grader output
1 Runtime error 78 ms 8656 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #14
0 / 5.0

# Verdict Execution time Memory Grader output
1 Runtime error 56 ms 7800 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #15
0 / 5.0

# Verdict Execution time Memory Grader output
1 Runtime error 78 ms 8668 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #16
0 / 5.0

# Verdict Execution time Memory Grader output
1 Runtime error 56 ms 7800 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #17
0 / 5.0

# Verdict Execution time Memory Grader output
1 Runtime error 79 ms 8576 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #18
0 / 5.0

# Verdict Execution time Memory Grader output
1 Runtime error 56 ms 7800 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #19
0 / 5.0

# Verdict Execution time Memory Grader output
1 Runtime error 82 ms 8560 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #20
0 / 5.0

# Verdict Execution time Memory Grader output
1 Runtime error 59 ms 7900 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #21
0 / 5.0

# Verdict Execution time Memory Grader output
1 Runtime error 80 ms 8964 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -