답안 #684372

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
684372	2023-01-21T05:02:47 Z	handlename	Mobile (BOI12_mobile)	C++17	100 / 100	828 ms	50992 KB

mobile

#include <bits/stdc++.h>
using namespace std;
#define pb push_back
#define mp make_pair
#define float long double
const int MOD=1e9+7;
//const int MOD=998244353;
const int sqn=450;
const long double eps=1e-6;
long double n,l,x[1000002],y[1000002];
void runtc(){
	cin>>n>>l;
	for (int i=1;i<=n;i++){
		cin>>x[i]>>y[i];
	}
	long double mini=0,maxi=1.5e9;
	while (mini+eps<maxi){
		long double mid=(mini+maxi)/2;
		long double cur=0;
		for (int i=1;i<=n;i++){
			if (mid*mid<y[i]*y[i]) continue;
			long double lol=sqrt(mid*mid-y[i]*y[i]);
			if (x[i]-lol<=cur) cur=max(cur,x[i]+lol);
		}
		if (cur>=l) maxi=mid;
		else mini=mid;
	}
	cout<<fixed<<setprecision(4);
	cout<<maxi;
}
int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
    //freopen("moocast.in","r",stdin);
    //freopen("moocast.out","w",stdout);
    //freopen("input1.in","r",stdin);
    //freopen("output1.out","w",stdout);
    //freopen("perfectly_balanced_chapter_1_input.txt","r",stdin);
    //freopen("hackercup_output.txt","w",stdout);
    int tc;
    //cin>>tc;
    tc=1;
    for (int i=1;i<=tc;i++){
        //cout<<"Case #"<<i<<": ";
        runtc();
    }
}

Subtask #1
4.0 / 4.0

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

Subtask #2
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	340 KB	Output is correct
2	Correct	1 ms	340 KB	Output is correct
3	Correct	0 ms	340 KB	Output is correct
4	Correct	0 ms	340 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	392 KB	Output is correct
4	Correct	2 ms	340 KB	Output is correct

Subtask #4
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	504 KB	Output is correct
2	Correct	6 ms	500 KB	Output is correct
3	Correct	4 ms	468 KB	Output is correct
4	Correct	4 ms	468 KB	Output is correct

Subtask #5
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	4 ms	424 KB	Output is correct
2	Correct	5 ms	468 KB	Output is correct
3	Correct	3 ms	468 KB	Output is correct
4	Correct	4 ms	464 KB	Output is correct

Subtask #6
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	4 ms	500 KB	Output is correct
2	Correct	5 ms	468 KB	Output is correct
3	Correct	4 ms	468 KB	Output is correct
4	Correct	4 ms	468 KB	Output is correct
5	Correct	3 ms	468 KB	Output is correct

Subtask #7
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	64 ms	2608 KB	Output is correct
2	Correct	60 ms	2612 KB	Output is correct
3	Correct	35 ms	2644 KB	Output is correct
4	Correct	50 ms	3864 KB	Output is correct
5	Correct	28 ms	2248 KB	Output is correct

Subtask #8
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	47 ms	2776 KB	Output is correct
2	Correct	43 ms	2512 KB	Output is correct
3	Correct	53 ms	2892 KB	Output is correct
4	Correct	52 ms	4004 KB	Output is correct
5	Correct	57 ms	4492 KB	Output is correct

Subtask #9
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	59 ms	3076 KB	Output is correct
2	Correct	62 ms	2808 KB	Output is correct
3	Correct	56 ms	3944 KB	Output is correct
4	Correct	70 ms	4968 KB	Output is correct
5	Correct	54 ms	4044 KB	Output is correct

Subtask #10
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	80 ms	3496 KB	Output is correct
2	Correct	78 ms	4848 KB	Output is correct
3	Correct	65 ms	4492 KB	Output is correct
4	Correct	70 ms	4868 KB	Output is correct
5	Correct	62 ms	4720 KB	Output is correct

Subtask #11
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	82 ms	3360 KB	Output is correct
2	Correct	76 ms	4584 KB	Output is correct
3	Correct	67 ms	4428 KB	Output is correct
4	Correct	70 ms	4992 KB	Output is correct
5	Correct	66 ms	4736 KB	Output is correct

Subtask #12
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	355 ms	15984 KB	Output is correct
2	Correct	381 ms	23708 KB	Output is correct
3	Correct	392 ms	23348 KB	Output is correct
4	Correct	350 ms	25560 KB	Output is correct
5	Correct	326 ms	22868 KB	Output is correct

Subtask #13
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	395 ms	15908 KB	Output is correct
2	Correct	453 ms	17480 KB	Output is correct
3	Correct	333 ms	21752 KB	Output is correct
4	Correct	391 ms	25284 KB	Output is correct
5	Correct	353 ms	23244 KB	Output is correct

Subtask #14
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	418 ms	19132 KB	Output is correct
2	Correct	467 ms	28468 KB	Output is correct
3	Correct	463 ms	27832 KB	Output is correct
4	Correct	426 ms	31220 KB	Output is correct
5	Correct	388 ms	27176 KB	Output is correct

Subtask #15
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	475 ms	19000 KB	Output is correct
2	Correct	514 ms	20640 KB	Output is correct
3	Correct	412 ms	25948 KB	Output is correct
4	Correct	437 ms	30924 KB	Output is correct
5	Correct	399 ms	27852 KB	Output is correct

Subtask #16
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	511 ms	22396 KB	Output is correct
2	Correct	545 ms	33100 KB	Output is correct
3	Correct	537 ms	32364 KB	Output is correct
4	Correct	493 ms	35800 KB	Output is correct
5	Correct	463 ms	31236 KB	Output is correct

Subtask #17
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	540 ms	22236 KB	Output is correct
2	Correct	606 ms	23720 KB	Output is correct
3	Correct	554 ms	30640 KB	Output is correct
4	Correct	514 ms	35564 KB	Output is correct
5	Correct	464 ms	32280 KB	Output is correct

Subtask #18
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	660 ms	25376 KB	Output is correct
2	Correct	636 ms	37804 KB	Output is correct
3	Correct	662 ms	36908 KB	Output is correct
4	Correct	669 ms	41036 KB	Output is correct
5	Correct	583 ms	36524 KB	Output is correct

Subtask #19
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	705 ms	25384 KB	Output is correct
2	Correct	706 ms	26760 KB	Output is correct
3	Correct	588 ms	34904 KB	Output is correct
4	Correct	644 ms	40756 KB	Output is correct
5	Correct	582 ms	36984 KB	Output is correct

Subtask #20
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	731 ms	31536 KB	Output is correct
2	Correct	807 ms	47180 KB	Output is correct
3	Correct	788 ms	46200 KB	Output is correct
4	Correct	743 ms	50848 KB	Output is correct
5	Correct	688 ms	45200 KB	Output is correct

Subtask #21
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	812 ms	31628 KB	Output is correct
2	Correct	828 ms	33040 KB	Output is correct
3	Correct	708 ms	43816 KB	Output is correct
4	Correct	733 ms	50992 KB	Output is correct
5	Correct	689 ms	46284 KB	Output is correct

답안 #684372

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