답안 #941218

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
941218	2024-03-08T09:45:34 Z	Kavelmydex	Mobile (BOI12_mobile)	C++17	4 / 100	1000 ms	26236 KB

mobile

#include <bits/stdc++.h>
using namespace std;
#define int long long
#define pi pair<int,int>
#define vi vector<int>
#define rep(i,x,n) for(int i=x; i<n; ++i)
#define For(i,n) rep(i,0,n)
#define pb push_back
#define endl "\n"
#define double long double
#define sp ' '
#define f first
#define s second
#define sz size()
#define all(x) (x).begin(),(x).end()

const int N = 3e5+10, OO = 1e18, mod = 1e9+7;
void tr(int a, int b){cout << a << sp << b << endl;}
void cmx(int &a, int b){a = max(a,b);}
void cmn(int &a, int b){a = min(a,b);}

double eps = 1e-6;
vector <pi> v;
double n,L;
bool ok(double m){
    double mn = OO, mx = -OO;
    For(i,n){
        auto [x,y] = v[i];
        if(y*y > m*m) continue;
        double d = sqrt(m * m - y * y);
        if(x - d > mx && mx != -OO) return 0; 
        if(x-d < mn) mn = x-d;
        if(mx < x+d) mx = x+d;   
    }
    return (mn <= 0 && L <= mx);
}
int32_t main() {
    ios::sync_with_stdio(0); cin.tie(0);
    cin >> n >> L;
    For(i,n){
        int x,y; cin >> x >> y;
        v.pb({x,y});
    }
    double l = 0, r = 1e10;
    For(i,100){
        double m = (l+r)/2;
        bool b = ok(m);
        if(b) r = m;
        else l = m;
    }
    cout << setprecision(20) << r << endl;
    return 0;
}

Subtask #1
4.0 / 4.0

#	결과	메모리	Grader output
1	Correct	344 KB	Output is correct
2	Correct	344 KB	Output is correct
3	Correct	348 KB	Output is correct
4	Correct	348 KB	Output is correct

Subtask #2
0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Incorrect	1 ms	348 KB	Output isn't correct
2	Halted	0 ms	0 KB	-

Subtask #3
0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Incorrect	2 ms	348 KB	Output isn't correct
2	Halted	0 ms	0 KB	-

Subtask #4
0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Incorrect	3 ms	604 KB	Output isn't correct
2	Halted	0 ms	0 KB	-

Subtask #5
0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Incorrect	3 ms	604 KB	Output isn't correct
2	Halted	0 ms	0 KB	-

Subtask #6
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Incorrect	5 ms	600 KB	Output isn't correct
2	Halted	0 ms	0 KB	-

Subtask #7
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Incorrect	116 ms	3288 KB	Output isn't correct
2	Halted	0 ms	0 KB	-

Subtask #8
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Incorrect	39 ms	3032 KB	Output isn't correct
2	Halted	0 ms	0 KB	-

Subtask #9
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	76 ms	3028 KB	Output is correct
2	Correct	94 ms	3232 KB	Output is correct
3	Correct	62 ms	3284 KB	Output is correct
4	Incorrect	37 ms	3800 KB	Output isn't correct
5	Halted	0 ms	0 KB	-

Subtask #10
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	97 ms	3288 KB	Output is correct
2	Correct	97 ms	3544 KB	Output is correct
3	Correct	77 ms	3304 KB	Output is correct
4	Incorrect	48 ms	3796 KB	Output isn't correct
5	Halted	0 ms	0 KB	-

Subtask #11
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	88 ms	3272 KB	Output is correct
2	Correct	92 ms	3544 KB	Output is correct
3	Correct	70 ms	3284 KB	Output is correct
4	Incorrect	43 ms	3796 KB	Output isn't correct
5	Halted	0 ms	0 KB	-

Subtask #12
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	436 ms	11196 KB	Output is correct
2	Correct	435 ms	13248 KB	Output is correct
3	Correct	453 ms	13244 KB	Output is correct
4	Incorrect	186 ms	14016 KB	Output isn't correct
5	Halted	0 ms	0 KB	-

Subtask #13
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	452 ms	12764 KB	Output is correct
2	Incorrect	602 ms	12476 KB	Output isn't correct
3	Halted	0 ms	0 KB	-

Subtask #14
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	524 ms	19636 KB	Output is correct
2	Correct	553 ms	23480 KB	Output is correct
3	Correct	551 ms	23100 KB	Output is correct
4	Incorrect	241 ms	23708 KB	Output isn't correct
5	Halted	0 ms	0 KB	-

Subtask #15
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	551 ms	22924 KB	Output is correct
2	Incorrect	955 ms	22024 KB	Output isn't correct
3	Halted	0 ms	0 KB	-

Subtask #16
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	633 ms	21028 KB	Output is correct
2	Correct	647 ms	23884 KB	Output is correct
3	Correct	629 ms	23548 KB	Output is correct
4	Incorrect	331 ms	24192 KB	Output isn't correct
5	Halted	0 ms	0 KB	-

Subtask #17
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	607 ms	24248 KB	Output is correct
2	Incorrect	913 ms	22456 KB	Output isn't correct
3	Halted	0 ms	0 KB	-

Subtask #18
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	694 ms	21948 KB	Output is correct
2	Correct	681 ms	24496 KB	Output is correct
3	Correct	665 ms	24944 KB	Output is correct
4	Incorrect	297 ms	26236 KB	Output isn't correct
5	Halted	0 ms	0 KB	-

Subtask #19
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	685 ms	22472 KB	Output is correct
2	Execution timed out	1037 ms	23028 KB	Time limit exceeded
3	Halted	0 ms	0 KB	-

Subtask #20
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	874 ms	20832 KB	Output is correct
2	Correct	896 ms	25264 KB	Output is correct
3	Correct	866 ms	25828 KB	Output is correct
4	Correct	385 ms	17332 KB	Output is correct
5	Incorrect	458 ms	17684 KB	Output isn't correct
6	Halted	0 ms	0 KB	-

Subtask #21
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	845 ms	17908 KB	Output is correct
2	Execution timed out	1058 ms	17732 KB	Time limit exceeded
3	Halted	0 ms	0 KB	-

답안 #941218

Compilation message