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답안 #965001

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
965001 2024-04-18T02:49:38 Z pcc Mobile (BOI12_mobile) C++17
35 / 100
 1000 ms 81576 KB 
#include <bits/stdc++.h>
using namespace std;

#define ll long long
#define pll pair<ll,ll>
#define pii pair<int,int>
#define fs first
#define sc second
#define tlll tuple<ll,ll,ll>
#define ld long double
#define pld pair<ld,ld>

const int mxn = 1e6+10;
ll N,L;
pair<ll,ll> arr[mxn];

inline bool check(ld r){
	vector<pld> v;
	for(int i = 0;i<N;i++){
		if(r<abs(arr[i].sc))continue;
		v.push_back(pld(arr[i].fs-sqrt(r*r-arr[i].sc*arr[i].sc),arr[i].fs+sqrt(r*r-arr[i].sc*arr[i].sc)));
	}
	sort(v.begin(),v.end());
	ld pre = 0;
	for(auto &i:v){
		if(pre>L)return true;
		if(pre<i.fs)return false;
		pre = max(pre,i.sc);
	}
	return pre>L;
}

int main(){
	ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
	ld l = 0,r = 2e9;
	cin>>N>>L;
	for(int i = 0;i<N;i++)cin>>arr[i].fs>>arr[i].sc;
	for(int i = 0;i<100;i++){
		ld mid = (l+r)/2;
		if(check(mid))r = mid;
		else l = mid;
	}
	cout<<fixed<<setprecision(10)<<l<<'\n';
	return 0;
}

Subtask #1
4.0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 424 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct

Subtask #2
4.0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct

Subtask #3
4.0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 712 KB Output is correct
2 Correct 17 ms 744 KB Output is correct
3 Correct 5 ms 604 KB Output is correct
4 Correct 17 ms 744 KB Output is correct

Subtask #4
4.0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 12 ms 1064 KB Output is correct
2 Correct 35 ms 1032 KB Output is correct
3 Correct 53 ms 1012 KB Output is correct
4 Correct 11 ms 1204 KB Output is correct

Subtask #5
4.0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 12 ms 996 KB Output is correct
2 Correct 42 ms 1028 KB Output is correct
3 Correct 50 ms 1000 KB Output is correct
4 Correct 9 ms 1028 KB Output is correct

Subtask #6
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 37 ms 1016 KB Output is correct
2 Correct 35 ms 1036 KB Output is correct
3 Correct 57 ms 1012 KB Output is correct
4 Correct 11 ms 1072 KB Output is correct
5 Correct 13 ms 984 KB Output is correct

Subtask #7
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 312 ms 11200 KB Output is correct
2 Correct 907 ms 10568 KB Output is correct
3 Correct 642 ms 7084 KB Output is correct
4 Correct 155 ms 11520 KB Output is correct
5 Correct 149 ms 6736 KB Output is correct

Subtask #8
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 229 ms 10844 KB Output is correct
2 Correct 179 ms 10012 KB Output is correct
3 Correct 214 ms 11264 KB Output is correct
4 Correct 154 ms 10504 KB Output is correct
5 Correct 151 ms 10988 KB Output is correct

Subtask #9
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 759 ms 10456 KB Output is correct
2 Execution timed out 1008 ms 10588 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #10
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 1008 ms 11624 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #11
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 788 ms 12488 KB Output is correct
2 Execution timed out 1049 ms 12484 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #12
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 1033 ms 45284 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #13
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 1033 ms 49156 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #14
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 1032 ms 65572 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #15
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 1028 ms 71488 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #16
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 1049 ms 69596 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #17
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 1046 ms 73568 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #18
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 1093 ms 71164 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #19
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 1030 ms 76868 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #20
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 1038 ms 74480 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #21
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 1022 ms 81576 KB Time limit exceeded
2 Halted 0 ms 0 KB -