답안 #639198

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
639198	2022-09-09T00:33:22 Z	Pietra	Mobile (BOI12_mobile)	C++14	80 / 100	1000 ms	16588 KB

mobile

#include<bits/stdc++.h>
#define int long long
using namespace std ;

const int maxn = 2e6 + 5 ;
const int inf = 2e9 + 5 ;

double n, l, x[maxn], y[maxn] ;

bool check(double r){

    double f = 0 ;

    for(int i = 1 ; i <= n ; i++){
        double dx = sqrt((r*r) - (y[i]*y[i])) ;
        double ini = x[i] - dx, fim = x[i] + dx ;
        if(ini <= f) f = max(f, fim) ;
    }

    return (f >= l) ;
}

int32_t main(){

    cin >> n >> l ;

    for(int i = 1 ; i <= n ; i++) cin >> x[i] >> y[i] ;

    double ini = 0, fim = inf*1.00, mid ;
    int ct = 44 ;

    while(ct--){
        mid = (ini + fim)/2 ;
        if(check(mid)) fim = mid ;
        else ini = mid ;
    }

    cout << fixed << setprecision(5) << fim << "\n" ;

}

Subtask #1
4.0 / 4.0

#	결과	메모리	Grader output
1	Correct	212 KB	Output is correct
2	Correct	212 KB	Output is correct
3	Correct	212 KB	Output is correct
4	Correct	212 KB	Output is correct

Subtask #2
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	0 ms	212 KB	Output is correct
3	Correct	1 ms	212 KB	Output is correct
4	Correct	1 ms	212 KB	Output is correct

Subtask #3
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	340 KB	Output is correct
2	Correct	2 ms	340 KB	Output is correct
3	Correct	2 ms	340 KB	Output is correct
4	Correct	3 ms	340 KB	Output is correct

Subtask #4
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	5 ms	340 KB	Output is correct
2	Correct	6 ms	340 KB	Output is correct
3	Correct	5 ms	360 KB	Output is correct
4	Correct	6 ms	340 KB	Output is correct

Subtask #5
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	5 ms	340 KB	Output is correct
2	Correct	6 ms	340 KB	Output is correct
3	Correct	4 ms	340 KB	Output is correct
4	Correct	7 ms	384 KB	Output is correct

Subtask #6
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	5 ms	340 KB	Output is correct
2	Correct	7 ms	340 KB	Output is correct
3	Correct	4 ms	340 KB	Output is correct
4	Correct	7 ms	340 KB	Output is correct
5	Correct	4 ms	340 KB	Output is correct

Subtask #7
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	86 ms	1368 KB	Output is correct
2	Correct	88 ms	1380 KB	Output is correct
3	Correct	51 ms	1136 KB	Output is correct
4	Correct	91 ms	1400 KB	Output is correct
5	Correct	41 ms	1084 KB	Output is correct

Subtask #8
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	76 ms	1484 KB	Output is correct
2	Correct	78 ms	1472 KB	Output is correct
3	Correct	88 ms	1456 KB	Output is correct
4	Correct	98 ms	1464 KB	Output is correct
5	Correct	108 ms	1576 KB	Output is correct

Subtask #9
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	68 ms	1584 KB	Output is correct
2	Correct	90 ms	1484 KB	Output is correct
3	Correct	82 ms	1524 KB	Output is correct
4	Correct	137 ms	1820 KB	Output is correct
5	Correct	85 ms	1696 KB	Output is correct

Subtask #10
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	113 ms	1788 KB	Output is correct
2	Correct	106 ms	1844 KB	Output is correct
3	Correct	95 ms	1780 KB	Output is correct
4	Correct	141 ms	1860 KB	Output is correct
5	Correct	109 ms	1788 KB	Output is correct

Subtask #11
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	113 ms	1776 KB	Output is correct
2	Correct	108 ms	1864 KB	Output is correct
3	Correct	106 ms	1840 KB	Output is correct
4	Correct	154 ms	1868 KB	Output is correct
5	Correct	124 ms	1872 KB	Output is correct

Subtask #12
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	420 ms	8120 KB	Output is correct
2	Correct	574 ms	8124 KB	Output is correct
3	Correct	575 ms	8068 KB	Output is correct
4	Correct	702 ms	8048 KB	Output is correct
5	Correct	572 ms	8116 KB	Output is correct

Subtask #13
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	591 ms	8588 KB	Output is correct
2	Correct	616 ms	8052 KB	Output is correct
3	Correct	512 ms	8120 KB	Output is correct
4	Correct	671 ms	8128 KB	Output is correct
5	Correct	580 ms	8120 KB	Output is correct

Subtask #14
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	503 ms	9688 KB	Output is correct
2	Correct	696 ms	9724 KB	Output is correct
3	Correct	654 ms	9696 KB	Output is correct
4	Correct	847 ms	9592 KB	Output is correct
5	Correct	654 ms	9644 KB	Output is correct

Subtask #15
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	721 ms	10208 KB	Output is correct
2	Correct	715 ms	9696 KB	Output is correct
3	Correct	590 ms	9676 KB	Output is correct
4	Correct	813 ms	9644 KB	Output is correct
5	Correct	678 ms	9708 KB	Output is correct

Subtask #16
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	564 ms	11260 KB	Output is correct
2	Correct	743 ms	11168 KB	Output is correct
3	Correct	725 ms	11268 KB	Output is correct
4	Correct	916 ms	11308 KB	Output is correct
5	Correct	727 ms	12444 KB	Output is correct

Subtask #17
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	781 ms	11756 KB	Output is correct
2	Correct	790 ms	11152 KB	Output is correct
3	Correct	666 ms	11256 KB	Output is correct
4	Correct	903 ms	11260 KB	Output is correct
5	Correct	769 ms	11340 KB	Output is correct

Subtask #18
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	639 ms	12720 KB	Output is correct
2	Correct	849 ms	12800 KB	Output is correct
3	Correct	821 ms	12896 KB	Output is correct
4	Execution timed out	1051 ms	12816 KB	Time limit exceeded
5	Halted	0 ms	0 KB	-

Subtask #19
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	903 ms	13380 KB	Output is correct
2	Correct	902 ms	12876 KB	Output is correct
3	Correct	855 ms	12748 KB	Output is correct
4	Execution timed out	1054 ms	12876 KB	Time limit exceeded
5	Halted	0 ms	0 KB	-

Subtask #20
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	806 ms	16588 KB	Output is correct
2	Execution timed out	1071 ms	15948 KB	Time limit exceeded
3	Halted	0 ms	0 KB	-

Subtask #21
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Execution timed out	1057 ms	16392 KB	Time limit exceeded
2	Halted	0 ms	0 KB	-

답안 #639198

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