답안 #1010105

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1010105	2024-06-28T10:30:26 Z	Psiuk_Yurii	Mobile (BOI12_mobile)	C++14	75 / 100	1000 ms	51028 KB

mobile

#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef long double ld;
typedef pair<ll,ll> pll;
typedef pair<ld,ld> pld;
typedef pair<ll,pll> ppl;

ll n;
ld x[1000009],y[1000009],u,L,R,eps;

bool can(ld R){
   ld r=0.0;
   for(int i=1;i<=n;i++){
       if(R>=y[i]){
           ld x0=x[i]-sqrt(R*R-y[i]*y[i]);
           ld x1=x[i]+sqrt(R*R-y[i]*y[i]);
           if(x0<=r+eps) r=max(x1,r);
           if(r>=u-eps) return true;
       }
   }
  return false;
}
int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    cin>>n>>u;
    for(int i=1;i<=n;i++) cin>>x[i]>>y[i];
    eps=0.0001;
    L=0.0; R=100000000000.0;
    while(L<R-eps){
        ld mid=(L+R)*0.5;
        if(can(mid)) R=mid;
        else L=mid;
    }
    cout<<fixed<<setprecision(5)<<L;


    return 0;
}

Subtask #1
4.0 / 4.0

#	결과	메모리	Grader output
1	Correct	344 KB	Output is correct
2	Correct	348 KB	Output is correct
3	Correct	348 KB	Output is correct
4	Correct	468 KB	Output is correct

Subtask #2
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	348 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 #3
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	568 KB	Output is correct
2	Correct	2 ms	348 KB	Output is correct
3	Correct	2 ms	348 KB	Output is correct
4	Correct	2 ms	348 KB	Output is correct

Subtask #4
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	4 ms	600 KB	Output is correct
2	Correct	2 ms	600 KB	Output is correct
3	Correct	2 ms	476 KB	Output is correct
4	Correct	5 ms	600 KB	Output is correct

Subtask #5
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	4 ms	640 KB	Output is correct
2	Correct	2 ms	640 KB	Output is correct
3	Correct	2 ms	604 KB	Output is correct
4	Correct	5 ms	604 KB	Output is correct

Subtask #6
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	604 KB	Output is correct
2	Correct	2 ms	604 KB	Output is correct
3	Correct	2 ms	604 KB	Output is correct
4	Correct	5 ms	724 KB	Output is correct
5	Correct	4 ms	604 KB	Output is correct

Subtask #7
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	36 ms	2648 KB	Output is correct
2	Correct	30 ms	2648 KB	Output is correct
3	Correct	19 ms	2648 KB	Output is correct
4	Correct	89 ms	3932 KB	Output is correct
5	Correct	33 ms	2396 KB	Output is correct

Subtask #8
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	61 ms	2908 KB	Output is correct
2	Correct	68 ms	2648 KB	Output is correct
3	Correct	83 ms	2908 KB	Output is correct
4	Correct	90 ms	2940 KB	Output is correct
5	Correct	109 ms	3160 KB	Output is correct

Subtask #9
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	43 ms	3208 KB	Output is correct
2	Correct	31 ms	2904 KB	Output is correct
3	Correct	33 ms	3932 KB	Output is correct
4	Correct	137 ms	5520 KB	Output is correct
5	Correct	82 ms	3944 KB	Output is correct

Subtask #10
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	53 ms	3424 KB	Output is correct
2	Correct	45 ms	5012 KB	Output is correct
3	Correct	40 ms	4572 KB	Output is correct
4	Correct	141 ms	5452 KB	Output is correct
5	Correct	103 ms	4700 KB	Output is correct

Subtask #11
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	59 ms	3600 KB	Output is correct
2	Correct	41 ms	3416 KB	Output is correct
3	Correct	33 ms	4444 KB	Output is correct
4	Correct	154 ms	5464 KB	Output is correct
5	Correct	106 ms	4700 KB	Output is correct

Subtask #12
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	280 ms	15956 KB	Output is correct
2	Correct	231 ms	23720 KB	Output is correct
3	Correct	203 ms	23204 KB	Output is correct
4	Correct	685 ms	25612 KB	Output is correct
5	Correct	538 ms	22872 KB	Output is correct

Subtask #13
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	233 ms	16212 KB	Output is correct
2	Correct	300 ms	22556 KB	Output is correct
3	Correct	159 ms	21840 KB	Output is correct
4	Correct	676 ms	25372 KB	Output is correct
5	Correct	588 ms	23408 KB	Output is correct

Subtask #14
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	337 ms	19028 KB	Output is correct
2	Correct	243 ms	28288 KB	Output is correct
3	Correct	216 ms	27800 KB	Output is correct
4	Correct	864 ms	31124 KB	Output is correct
5	Correct	638 ms	27004 KB	Output is correct

Subtask #15
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	271 ms	19240 KB	Output is correct
2	Correct	346 ms	26964 KB	Output is correct
3	Correct	254 ms	25936 KB	Output is correct
4	Correct	790 ms	30800 KB	Output is correct
5	Correct	678 ms	27728 KB	Output is correct

Subtask #16
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	377 ms	22312 KB	Output is correct
2	Correct	267 ms	33108 KB	Output is correct
3	Correct	310 ms	32340 KB	Output is correct
4	Correct	998 ms	35924 KB	Output is correct
5	Correct	805 ms	31568 KB	Output is correct

Subtask #17
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	294 ms	22352 KB	Output is correct
2	Correct	442 ms	31568 KB	Output is correct
3	Correct	251 ms	30544 KB	Output is correct
4	Execution timed out	1056 ms	35668 KB	Time limit exceeded
5	Halted	0 ms	0 KB	-

Subtask #18
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	490 ms	25360 KB	Output is correct
2	Correct	333 ms	37816 KB	Output is correct
3	Correct	280 ms	37096 KB	Output is correct
4	Execution timed out	1075 ms	41080 KB	Time limit exceeded
5	Halted	0 ms	0 KB	-

Subtask #19
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	399 ms	25428 KB	Output is correct
2	Correct	459 ms	35948 KB	Output is correct
3	Correct	316 ms	34936 KB	Output is correct
4	Execution timed out	1052 ms	40784 KB	Time limit exceeded
5	Halted	0 ms	0 KB	-

Subtask #20
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	625 ms	31572 KB	Output is correct
2	Correct	384 ms	47252 KB	Output is correct
3	Correct	411 ms	46164 KB	Output is correct
4	Execution timed out	1094 ms	50768 KB	Time limit exceeded
5	Halted	0 ms	0 KB	-

Subtask #21
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	399 ms	31572 KB	Output is correct
2	Correct	525 ms	44880 KB	Output is correct
3	Correct	413 ms	43980 KB	Output is correct
4	Execution timed out	1060 ms	51028 KB	Time limit exceeded
5	Halted	0 ms	0 KB	-

답안 #1010105

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