oj.uz

답안 #494145

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
494145 2021-12-14T12:52:26 Z PikaQ Mobile (BOI12_mobile) C++17
90 / 100
 1000 ms 47100 KB 
#include<bits/stdc++.h>
#define int ll
#define forn(i,n) for(int i=0;i<(n);i++)
#define Forn(i,n) for(int i=1;i<=(n);i++)
#define ll long long
#define pb push_back
#define F first
#define S second
#define lb lower_bound
#define ub upper_bound
#define vi vector<int>
#define vl vector<long long>
#define vpi vector<pair<int,int> >
#define pii pair<int,int>
#define pll pair<long long,long long>
#define mp make_pair
#define rz resize
#define all(p) p.begin(),p.end()
#define alr(p,q) p+1,p+q+1
#define ull unsigned long long
#define st0(p) memset((p),0,sizeof(p))
#define T(x) ((x)%2 ? s[(x)/2] : '.')
#define lowb(x) x&-x
#define ls(x) (x)*2
#define rs(x) (x)*2+1
using namespace std;
 
inline void USACO(string filename){
	freopen((filename+".in").c_str(),"r",stdin);
	freopen((filename+".out").c_str(),"w",stdout);
}
 
void debug() {cout << endl;}
template <class T, class ...U> void debug(T a, U ... b) { cout << a << " "; debug(b...);}
// template <class T> int max(T a, T ... b) { cout << a << " "; debug(b...);}
const int INF = 1e9+7;
const double eps = 1e-7;
const int N = 8e2+9;
int n;
 
#define double long double
#define pdd pair<double,double> 
int L;
vector<pdd> p;
 
 
bool check(double R){
	vector<pdd> vs;
	double cur = 0;
	for(auto &i : p){
		double dy = abs(i.S);
		if(dy - R > eps) continue;
		double d = sqrt(R*R - dy*dy);
		double l = i.F -d,r = i.F +d;
		if(l <= cur) cur = max(cur,(double)r);
	}
	
	return cur >= L;
}
 
void solve(){
	cin >> n >> L;
	p.rz(n);
	forn(i,n) cin >> p[i].F >> p[i].S;
	sort(all(p));
	double lo = 0,hi = 1e10;
	while(hi - lo > 1e-7){
		double mid = (lo+hi)/2;
		if(check(mid)) hi = mid;
		else lo = mid;
	}
	// debug(check((double)10));
	cout << hi << '\n';
}		 	
 
 
 
signed main(){
	// USACO("angry");
	cin.tie(0);
	cout.tie(0);
	ios_base::sync_with_stdio(0);
 

		cout << fixed << setprecision(4);
	// int t;
	// cin >> t;
	// while(t--)
	solve();
	return 0;
}

Subtask #1
4.0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 0 ms 312 KB Output is correct
4 Correct 1 ms 204 KB Output is correct

Subtask #2
4.0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 296 KB Output is correct

Subtask #3
4.0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 332 KB Output is correct
2 Correct 3 ms 332 KB Output is correct
3 Correct 2 ms 332 KB Output is correct
4 Correct 3 ms 332 KB Output is correct

Subtask #4
4.0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 460 KB Output is correct
2 Correct 5 ms 460 KB Output is correct
3 Correct 5 ms 452 KB Output is correct
4 Correct 5 ms 448 KB Output is correct

Subtask #5
4.0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 460 KB Output is correct
2 Correct 5 ms 460 KB Output is correct
3 Correct 5 ms 512 KB Output is correct
4 Correct 6 ms 460 KB Output is correct

Subtask #6
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 452 KB Output is correct
2 Correct 6 ms 460 KB Output is correct
3 Correct 7 ms 460 KB Output is correct
4 Correct 4 ms 456 KB Output is correct
5 Correct 5 ms 460 KB Output is correct

Subtask #7
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 75 ms 2764 KB Output is correct
2 Correct 74 ms 2764 KB Output is correct
3 Correct 46 ms 2504 KB Output is correct
4 Correct 59 ms 3824 KB Output is correct
5 Correct 42 ms 2260 KB Output is correct

Subtask #8
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 57 ms 2892 KB Output is correct
2 Correct 52 ms 2636 KB Output is correct
3 Correct 60 ms 2892 KB Output is correct
4 Correct 63 ms 2904 KB Output is correct
5 Correct 72 ms 3148 KB Output is correct

Subtask #9
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 76 ms 3148 KB Output is correct
2 Correct 75 ms 3020 KB Output is correct
3 Correct 74 ms 3852 KB Output is correct
4 Correct 83 ms 5332 KB Output is correct
5 Correct 66 ms 3992 KB Output is correct

Subtask #10
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 97 ms 3532 KB Output is correct
2 Correct 93 ms 4804 KB Output is correct
3 Correct 84 ms 4472 KB Output is correct
4 Correct 84 ms 5352 KB Output is correct
5 Correct 79 ms 4588 KB Output is correct

Subtask #11
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 100 ms 3532 KB Output is correct
2 Correct 93 ms 3532 KB Output is correct
3 Correct 91 ms 4452 KB Output is correct
4 Correct 102 ms 5308 KB Output is correct
5 Correct 77 ms 4724 KB Output is correct

Subtask #12
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 460 ms 16360 KB Output is correct
2 Correct 497 ms 18400 KB Output is correct
3 Correct 477 ms 18372 KB Output is correct
4 Correct 429 ms 18392 KB Output is correct
5 Correct 403 ms 18340 KB Output is correct

Subtask #13
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 511 ms 16240 KB Output is correct
2 Correct 534 ms 18392 KB Output is correct
3 Correct 418 ms 18500 KB Output is correct
4 Correct 427 ms 18280 KB Output is correct
5 Correct 388 ms 18292 KB Output is correct

Subtask #14
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 523 ms 19396 KB Output is correct
2 Correct 618 ms 21488 KB Output is correct
3 Correct 573 ms 21572 KB Output is correct
4 Correct 522 ms 21528 KB Output is correct
5 Correct 491 ms 21440 KB Output is correct

Subtask #15
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 597 ms 19400 KB Output is correct
2 Correct 630 ms 21640 KB Output is correct
3 Correct 515 ms 21444 KB Output is correct
4 Correct 516 ms 21532 KB Output is correct
5 Correct 515 ms 21516 KB Output is correct

Subtask #16
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 625 ms 22652 KB Output is correct
2 Correct 700 ms 24644 KB Output is correct
3 Correct 688 ms 24656 KB Output is correct
4 Correct 610 ms 24388 KB Output is correct
5 Correct 554 ms 24392 KB Output is correct

Subtask #17
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 695 ms 22516 KB Output is correct
2 Correct 725 ms 24268 KB Output is correct
3 Correct 584 ms 24132 KB Output is correct
4 Correct 600 ms 24108 KB Output is correct
5 Correct 556 ms 24132 KB Output is correct

Subtask #18
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 684 ms 25716 KB Output is correct
2 Correct 763 ms 27248 KB Output is correct
3 Correct 782 ms 26984 KB Output is correct
4 Correct 682 ms 26948 KB Output is correct
5 Correct 632 ms 26692 KB Output is correct

Subtask #19
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 811 ms 25756 KB Output is correct
2 Correct 801 ms 26728 KB Output is correct
3 Correct 694 ms 26640 KB Output is correct
4 Correct 679 ms 26500 KB Output is correct
5 Correct 640 ms 26504 KB Output is correct

Subtask #20
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 909 ms 32164 KB Output is correct
2 Execution timed out 1002 ms 47100 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #21
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 992 ms 32172 KB Output is correct
2 Execution timed out 1008 ms 44792 KB Time limit exceeded
3 Halted 0 ms 0 KB -