답안 #941213

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
941213	2024-03-08T09:40:43 Z	Kavelmydex	Mobile (BOI12_mobile)	C++17	4 / 100	888 ms	35308 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 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);}

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	실행 시간	메모리	Grader output
1	Correct	0 ms	344 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	1 ms	348 KB	Output is correct
4	Correct	0 ms	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	600 KB	Output isn't correct
2	Halted	0 ms	0 KB	-

Subtask #6
0 / 5.0

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

Subtask #7
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Incorrect	88 ms	2516 KB	Output isn't correct
2	Halted	0 ms	0 KB	-

Subtask #8
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Incorrect	32 ms	2520 KB	Output isn't correct
2	Halted	0 ms	0 KB	-

Subtask #9
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	45 ms	2520 KB	Output is correct
2	Correct	50 ms	3544 KB	Output is correct
3	Correct	40 ms	3544 KB	Output is correct
4	Incorrect	33 ms	4056 KB	Output isn't correct
5	Halted	0 ms	0 KB	-

Subtask #10
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	58 ms	2520 KB	Output is correct
2	Correct	62 ms	3544 KB	Output is correct
3	Correct	65 ms	3544 KB	Output is correct
4	Incorrect	56 ms	4056 KB	Output isn't correct
5	Halted	0 ms	0 KB	-

Subtask #11
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	57 ms	2516 KB	Output is correct
2	Correct	55 ms	3796 KB	Output is correct
3	Correct	53 ms	3288 KB	Output is correct
4	Incorrect	40 ms	4056 KB	Output isn't correct
5	Halted	0 ms	0 KB	-

Subtask #12
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	322 ms	10688 KB	Output is correct
2	Correct	294 ms	16024 KB	Output is correct
3	Correct	278 ms	15580 KB	Output is correct
4	Incorrect	187 ms	17848 KB	Output isn't correct
5	Halted	0 ms	0 KB	-

Subtask #13
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	296 ms	10772 KB	Output is correct
2	Incorrect	519 ms	14836 KB	Output isn't correct
3	Halted	0 ms	0 KB	-

Subtask #14
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	331 ms	17080 KB	Output is correct
2	Correct	369 ms	27088 KB	Output is correct
3	Correct	332 ms	25408 KB	Output is correct
4	Incorrect	223 ms	29228 KB	Output isn't correct
5	Halted	0 ms	0 KB	-

Subtask #15
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	364 ms	17276 KB	Output is correct
2	Incorrect	724 ms	24852 KB	Output isn't correct
3	Halted	0 ms	0 KB	-

Subtask #16
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	361 ms	17796 KB	Output is correct
2	Correct	377 ms	25296 KB	Output is correct
3	Correct	367 ms	26036 KB	Output is correct
4	Incorrect	245 ms	27512 KB	Output isn't correct
5	Halted	0 ms	0 KB	-

Subtask #17
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	404 ms	17752 KB	Output is correct
2	Incorrect	793 ms	24116 KB	Output isn't correct
3	Halted	0 ms	0 KB	-

Subtask #18
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	432 ms	18620 KB	Output is correct
2	Correct	421 ms	25528 KB	Output is correct
3	Correct	431 ms	26552 KB	Output is correct
4	Incorrect	262 ms	28592 KB	Output isn't correct
5	Halted	0 ms	0 KB	-

Subtask #19
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	432 ms	17908 KB	Output is correct
2	Incorrect	880 ms	25588 KB	Output isn't correct
3	Halted	0 ms	0 KB	-

Subtask #20
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	508 ms	16824 KB	Output is correct
2	Correct	532 ms	31664 KB	Output is correct
3	Correct	542 ms	30636 KB	Output is correct
4	Correct	351 ms	35308 KB	Output is correct
5	Incorrect	404 ms	30380 KB	Output isn't correct
6	Halted	0 ms	0 KB	-

Subtask #21
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	539 ms	24620 KB	Output is correct
2	Incorrect	888 ms	29616 KB	Output isn't correct
3	Halted	0 ms	0 KB	-

답안 #941213

Compilation message