답안 #684378

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
684378	2023-01-21T05:09:00 Z	handlename	Mobile (BOI12_mobile)	C++17	100 / 100	791 ms	31732 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-4;
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=2e9;
	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]<0) 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	1 ms	340 KB	Output is correct
2	Correct	0 ms	340 KB	Output is correct
3	Correct	1 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	436 KB	Output is correct
2	Correct	2 ms	340 KB	Output is correct
3	Correct	2 ms	340 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	468 KB	Output is correct
2	Correct	4 ms	468 KB	Output is correct
3	Correct	4 ms	468 KB	Output is correct
4	Correct	3 ms	468 KB	Output is correct

Subtask #5
4.0 / 4.0

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

Subtask #6
5.0 / 5.0

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

Subtask #7
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	56 ms	2580 KB	Output is correct
2	Correct	57 ms	2724 KB	Output is correct
3	Correct	34 ms	2004 KB	Output is correct
4	Correct	51 ms	2696 KB	Output is correct
5	Correct	28 ms	1892 KB	Output is correct

Subtask #8
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	46 ms	2664 KB	Output is correct
2	Correct	44 ms	2536 KB	Output is correct
3	Correct	58 ms	2872 KB	Output is correct
4	Correct	53 ms	2772 KB	Output is correct
5	Correct	58 ms	3040 KB	Output is correct

Subtask #9
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	58 ms	3196 KB	Output is correct
2	Correct	60 ms	2908 KB	Output is correct
3	Correct	55 ms	2980 KB	Output is correct
4	Correct	70 ms	3336 KB	Output is correct
5	Correct	52 ms	3120 KB	Output is correct

Subtask #10
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	76 ms	3352 KB	Output is correct
2	Correct	77 ms	3460 KB	Output is correct
3	Correct	64 ms	3412 KB	Output is correct
4	Correct	70 ms	3400 KB	Output is correct
5	Correct	64 ms	3436 KB	Output is correct

Subtask #11
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	79 ms	3400 KB	Output is correct
2	Correct	74 ms	3460 KB	Output is correct
3	Correct	63 ms	3340 KB	Output is correct
4	Correct	71 ms	3404 KB	Output is correct
5	Correct	62 ms	3416 KB	Output is correct

Subtask #12
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	328 ms	15980 KB	Output is correct
2	Correct	367 ms	15916 KB	Output is correct
3	Correct	365 ms	15972 KB	Output is correct
4	Correct	352 ms	15976 KB	Output is correct
5	Correct	324 ms	15988 KB	Output is correct

Subtask #13
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	374 ms	15904 KB	Output is correct
2	Correct	421 ms	16028 KB	Output is correct
3	Correct	325 ms	16076 KB	Output is correct
4	Correct	359 ms	15880 KB	Output is correct
5	Correct	344 ms	16004 KB	Output is correct

Subtask #14
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	415 ms	19032 KB	Output is correct
2	Correct	460 ms	19120 KB	Output is correct
3	Correct	454 ms	19184 KB	Output is correct
4	Correct	476 ms	19064 KB	Output is correct
5	Correct	390 ms	19148 KB	Output is correct

Subtask #15
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	453 ms	19120 KB	Output is correct
2	Correct	513 ms	19120 KB	Output is correct
3	Correct	377 ms	19148 KB	Output is correct
4	Correct	429 ms	19152 KB	Output is correct
5	Correct	386 ms	19120 KB	Output is correct

Subtask #16
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	495 ms	22248 KB	Output is correct
2	Correct	540 ms	22176 KB	Output is correct
3	Correct	502 ms	22240 KB	Output is correct
4	Correct	504 ms	22248 KB	Output is correct
5	Correct	444 ms	22304 KB	Output is correct

Subtask #17
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	520 ms	22204 KB	Output is correct
2	Correct	557 ms	22260 KB	Output is correct
3	Correct	452 ms	22296 KB	Output is correct
4	Correct	490 ms	22152 KB	Output is correct
5	Correct	449 ms	22252 KB	Output is correct

Subtask #18
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	545 ms	25380 KB	Output is correct
2	Correct	590 ms	25380 KB	Output is correct
3	Correct	581 ms	25376 KB	Output is correct
4	Correct	571 ms	25360 KB	Output is correct
5	Correct	518 ms	25324 KB	Output is correct

Subtask #19
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	589 ms	25384 KB	Output is correct
2	Correct	644 ms	25276 KB	Output is correct
3	Correct	513 ms	25344 KB	Output is correct
4	Correct	563 ms	25360 KB	Output is correct
5	Correct	538 ms	25448 KB	Output is correct

Subtask #20
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	670 ms	31544 KB	Output is correct
2	Correct	743 ms	31692 KB	Output is correct
3	Correct	718 ms	31592 KB	Output is correct
4	Correct	694 ms	31560 KB	Output is correct
5	Correct	651 ms	31628 KB	Output is correct

Subtask #21
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	736 ms	31520 KB	Output is correct
2	Correct	791 ms	31672 KB	Output is correct
3	Correct	659 ms	31732 KB	Output is correct
4	Correct	699 ms	31628 KB	Output is correct
5	Correct	652 ms	31628 KB	Output is correct

답안 #684378

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