oj.uz

답안 #168831

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
168831 2019-12-16T15:56:41 Z MohamedAhmed04 Mobile (BOI12_mobile) C++14
90 / 100
 1000 ms 8312 KB 
#include <bits/stdc++.h>
 
using namespace std ;
 
const int MAX = 1e6 + 10 ;
int x[MAX] , y[MAX] ;
int n , l;
double a , b , now;
 
bool check(double radius)
{
	now = 0.00 ;
	for(int i = 0 ; i < n ; ++i)
	{
		a = sqrt(radius * radius - ((-y[i] * 1ll) * (-y[i] * 1ll))) + x[i] * 1ll ;
		b = -sqrt(radius * radius - ((-y[i] * 1ll) * (-y[i] * 1ll))) + x[i] * 1ll ;
		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) ;
	scanf("%d %d" , &n , &l) ;
	for(int i = 0 ; i < n ; ++i)
		scanf("%d %d" , &x[i] , &y[i]) ;
	double low = 0.000 , high = 1e9 ;
	double ans = high ;
	for(int i = 0 ; i < 45 ; ++i)
	{
		double mid = (low + high) / 2.00 ;
		if(check(mid))
			ans = mid , high = mid ;
		else
			low = mid ;
	}
	return printf("%.6lf\n" , ans) , 0 ;
}

Compilation message

mobile.cpp: In function 'int main()':
mobile.cpp:29:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %d" , &n , &l) ;
  ~~~~~^~~~~~~~~~~~~~~~~~~
mobile.cpp:31:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d %d" , &x[i] , &y[i]) ;
   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
4.0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct

Subtask #2
4.0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct

Subtask #3
4.0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 376 KB Output is correct
2 Correct 3 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 #4
4.0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 376 KB Output is correct
2 Correct 5 ms 376 KB Output is correct
3 Correct 5 ms 376 KB Output is correct
4 Correct 6 ms 376 KB Output is correct

Subtask #5
4.0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 436 KB Output is correct
2 Correct 5 ms 376 KB Output is correct
3 Correct 5 ms 348 KB Output is correct
4 Correct 6 ms 376 KB Output is correct

Subtask #6
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 376 KB Output is correct
2 Correct 5 ms 376 KB Output is correct
3 Correct 5 ms 376 KB Output is correct
4 Correct 7 ms 376 KB Output is correct
5 Correct 6 ms 376 KB Output is correct

Subtask #7
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 64 ms 980 KB Output is correct
2 Correct 51 ms 1016 KB Output is correct
3 Correct 38 ms 1016 KB Output is correct
4 Correct 73 ms 988 KB Output is correct
5 Correct 41 ms 760 KB Output is correct

Subtask #8
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 64 ms 1016 KB Output is correct
2 Correct 62 ms 948 KB Output is correct
3 Correct 74 ms 1016 KB Output is correct
4 Correct 77 ms 1016 KB Output is correct
5 Correct 90 ms 1016 KB Output is correct

Subtask #9
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 54 ms 1096 KB Output is correct
2 Correct 55 ms 1016 KB Output is correct
3 Correct 59 ms 1016 KB Output is correct
4 Correct 107 ms 1188 KB Output is correct
5 Correct 76 ms 1016 KB Output is correct

Subtask #10
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 67 ms 1180 KB Output is correct
2 Correct 67 ms 1192 KB Output is correct
3 Correct 69 ms 1144 KB Output is correct
4 Correct 107 ms 1120 KB Output is correct
5 Correct 90 ms 1144 KB Output is correct

Subtask #11
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 68 ms 1144 KB Output is correct
2 Correct 65 ms 1148 KB Output is correct
3 Correct 69 ms 1192 KB Output is correct
4 Correct 106 ms 1144 KB Output is correct
5 Correct 92 ms 1180 KB Output is correct

Subtask #12
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 302 ms 4216 KB Output is correct
2 Correct 325 ms 4308 KB Output is correct
3 Correct 320 ms 4344 KB Output is correct
4 Correct 525 ms 4472 KB Output is correct
5 Correct 455 ms 4432 KB Output is correct

Subtask #13
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 326 ms 4412 KB Output is correct
2 Correct 452 ms 4312 KB Output is correct
3 Correct 337 ms 4344 KB Output is correct
4 Correct 751 ms 4344 KB Output is correct
5 Correct 469 ms 4468 KB Output is correct

Subtask #14
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 354 ms 5040 KB Output is correct
2 Correct 385 ms 5196 KB Output is correct
3 Correct 382 ms 5164 KB Output is correct
4 Correct 635 ms 5056 KB Output is correct
5 Correct 539 ms 5112 KB Output is correct

Subtask #15
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 392 ms 5112 KB Output is correct
2 Correct 534 ms 5112 KB Output is correct
3 Correct 403 ms 4984 KB Output is correct
4 Correct 634 ms 5092 KB Output is correct
5 Correct 559 ms 4984 KB Output is correct

Subtask #16
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 413 ms 5924 KB Output is correct
2 Correct 452 ms 5952 KB Output is correct
3 Correct 448 ms 5892 KB Output is correct
4 Correct 732 ms 5880 KB Output is correct
5 Correct 624 ms 5880 KB Output is correct

Subtask #17
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 455 ms 5880 KB Output is correct
2 Correct 617 ms 5948 KB Output is correct
3 Correct 472 ms 6008 KB Output is correct
4 Correct 725 ms 6008 KB Output is correct
5 Correct 652 ms 5880 KB Output is correct

Subtask #18
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 472 ms 6608 KB Output is correct
2 Correct 516 ms 6712 KB Output is correct
3 Correct 508 ms 6776 KB Output is correct
4 Correct 840 ms 6780 KB Output is correct
5 Correct 729 ms 6828 KB Output is correct

Subtask #19
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 518 ms 6648 KB Output is correct
2 Correct 712 ms 6600 KB Output is correct
3 Correct 539 ms 6664 KB Output is correct
4 Correct 862 ms 6748 KB Output is correct
5 Correct 748 ms 6716 KB Output is correct

Subtask #20
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 589 ms 8224 KB Output is correct
2 Correct 641 ms 8148 KB Output is correct
3 Correct 635 ms 8156 KB Output is correct
4 Execution timed out 1046 ms 8212 KB Time limit exceeded
5 Halted 0 ms 0 KB -

Subtask #21
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 648 ms 8244 KB Output is correct
2 Correct 879 ms 8208 KB Output is correct
3 Correct 681 ms 8312 KB Output is correct
4 Execution timed out 1051 ms 8312 KB Time limit exceeded
5 Halted 0 ms 0 KB -