답안 #991332

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
991332	2024-06-02T03:44:05 Z	BF001	Mobile (BOI12_mobile)	C++17	100 / 100	337 ms	16264 KB

mobile

#include <bits/stdc++.h>
using namespace std;
 
#define N 1000005
#define ld double
 
int n, len;
long long x[N], y[N];
 
signed main(){
    ios_base::sync_with_stdio(0);
    cin.tie(NULL);
    
    cin >> n >> len;
    for (int i = 1; i <= n; i++) cin >> x[i] >> y[i];
 
    ld l = 0, r = 2e9;
    while (r - l > 1e-3){
    	ld mid = (l + r) / 2.0;
    	ld cur = 0;
    	for (int i = 1; i <= n; i++){
    		ld denta = sqrt(mid * mid - y[i] * y[i]);
    		ld a = x[i] - denta;
    		ld b = x[i] + denta;
    		if (a <= cur) cur = max(cur, b);
    	}
    	if (cur >= len) r = mid;
    	else l = mid;
    }
 
    cout << fixed << setprecision(6) << l;
    
    return 0;
}

Subtask #1
4.0 / 4.0

#	결과	메모리	Grader output
1	Correct	2392 KB	Output is correct
2	Correct	2396 KB	Output is correct
3	Correct	2396 KB	Output is correct
4	Correct	2396 KB	Output is correct

Subtask #2
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	2392 KB	Output is correct
2	Correct	1 ms	2396 KB	Output is correct
3	Correct	0 ms	2396 KB	Output is correct
4	Correct	0 ms	2396 KB	Output is correct

Subtask #3
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	2392 KB	Output is correct
2	Correct	1 ms	2396 KB	Output is correct
3	Correct	1 ms	2396 KB	Output is correct
4	Correct	1 ms	2392 KB	Output is correct

Subtask #4
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	2396 KB	Output is correct
2	Correct	2 ms	2396 KB	Output is correct
3	Correct	2 ms	2396 KB	Output is correct
4	Correct	2 ms	2396 KB	Output is correct

Subtask #5
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	2396 KB	Output is correct
2	Correct	1 ms	2396 KB	Output is correct
3	Correct	2 ms	2564 KB	Output is correct
4	Correct	2 ms	2396 KB	Output is correct

Subtask #6
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	2392 KB	Output is correct
2	Correct	2 ms	2396 KB	Output is correct
3	Correct	2 ms	2396 KB	Output is correct
4	Correct	3 ms	2396 KB	Output is correct
5	Correct	2 ms	2396 KB	Output is correct

Subtask #7
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	25 ms	6748 KB	Output is correct
2	Correct	18 ms	6796 KB	Output is correct
3	Correct	12 ms	4700 KB	Output is correct
4	Correct	22 ms	6792 KB	Output is correct
5	Correct	12 ms	4696 KB	Output is correct

Subtask #8
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	19 ms	6748 KB	Output is correct
2	Correct	19 ms	4744 KB	Output is correct
3	Correct	22 ms	6748 KB	Output is correct
4	Correct	24 ms	6804 KB	Output is correct
5	Correct	34 ms	6800 KB	Output is correct

Subtask #9
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	17 ms	6744 KB	Output is correct
2	Correct	19 ms	6748 KB	Output is correct
3	Correct	20 ms	6796 KB	Output is correct
4	Correct	33 ms	6792 KB	Output is correct
5	Correct	29 ms	6744 KB	Output is correct

Subtask #10
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	25 ms	6744 KB	Output is correct
2	Correct	25 ms	6748 KB	Output is correct
3	Correct	24 ms	6748 KB	Output is correct
4	Correct	32 ms	6748 KB	Output is correct
5	Correct	27 ms	6744 KB	Output is correct

Subtask #11
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	23 ms	6744 KB	Output is correct
2	Correct	24 ms	6748 KB	Output is correct
3	Correct	22 ms	6748 KB	Output is correct
4	Correct	31 ms	6744 KB	Output is correct
5	Correct	27 ms	6744 KB	Output is correct

Subtask #12
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	112 ms	10632 KB	Output is correct
2	Correct	116 ms	10832 KB	Output is correct
3	Correct	108 ms	10832 KB	Output is correct
4	Correct	153 ms	10900 KB	Output is correct
5	Correct	136 ms	10848 KB	Output is correct

Subtask #13
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	114 ms	10832 KB	Output is correct
2	Correct	188 ms	11132 KB	Output is correct
3	Correct	114 ms	10880 KB	Output is correct
4	Correct	150 ms	10624 KB	Output is correct
5	Correct	138 ms	10880 KB	Output is correct

Subtask #14
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	122 ms	14944 KB	Output is correct
2	Correct	159 ms	14984 KB	Output is correct
3	Correct	135 ms	14928 KB	Output is correct
4	Correct	204 ms	14984 KB	Output is correct
5	Correct	164 ms	14928 KB	Output is correct

Subtask #15
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	143 ms	14928 KB	Output is correct
2	Correct	220 ms	15188 KB	Output is correct
3	Correct	132 ms	14972 KB	Output is correct
4	Correct	189 ms	14928 KB	Output is correct
5	Correct	165 ms	14928 KB	Output is correct

Subtask #16
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	140 ms	14932 KB	Output is correct
2	Correct	160 ms	14928 KB	Output is correct
3	Correct	155 ms	14928 KB	Output is correct
4	Correct	221 ms	14932 KB	Output is correct
5	Correct	187 ms	14984 KB	Output is correct

Subtask #17
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	163 ms	14928 KB	Output is correct
2	Correct	255 ms	14928 KB	Output is correct
3	Correct	157 ms	14932 KB	Output is correct
4	Correct	223 ms	14932 KB	Output is correct
5	Correct	202 ms	14984 KB	Output is correct

Subtask #18
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	167 ms	14984 KB	Output is correct
2	Correct	182 ms	14928 KB	Output is correct
3	Correct	186 ms	14928 KB	Output is correct
4	Correct	238 ms	14928 KB	Output is correct
5	Correct	220 ms	14928 KB	Output is correct

Subtask #19
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	197 ms	14984 KB	Output is correct
2	Correct	275 ms	14980 KB	Output is correct
3	Correct	178 ms	14932 KB	Output is correct
4	Correct	271 ms	14988 KB	Output is correct
5	Correct	232 ms	14932 KB	Output is correct

Subtask #20
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	200 ms	15952 KB	Output is correct
2	Correct	229 ms	16084 KB	Output is correct
3	Correct	224 ms	15956 KB	Output is correct
4	Correct	325 ms	16264 KB	Output is correct
5	Correct	294 ms	15992 KB	Output is correct

Subtask #21
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	232 ms	15952 KB	Output is correct
2	Correct	337 ms	15956 KB	Output is correct
3	Correct	223 ms	15952 KB	Output is correct
4	Correct	307 ms	15952 KB	Output is correct
5	Correct	277 ms	16016 KB	Output is correct

답안 #991332

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