답안 #1010110

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1010110	2024-06-28T10:34:25 Z	Psiuk_Yurii	Mobile (BOI12_mobile)	C++17	75 / 100	1000 ms	31824 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=1000000000.0;
    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	348 KB	Output is correct

Subtask #2
4.0 / 4.0

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

Subtask #3
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	344 KB	Output is correct
2	Correct	1 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	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	604 KB	Output is correct

Subtask #5
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	8 ms	600 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	644 KB	Output is correct

Subtask #6
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	600 KB	Output is correct
2	Correct	3 ms	600 KB	Output is correct
3	Correct	3 ms	600 KB	Output is correct
4	Correct	6 ms	604 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	34 ms	2652 KB	Output is correct
2	Correct	31 ms	2696 KB	Output is correct
3	Correct	17 ms	2136 KB	Output is correct
4	Correct	112 ms	2640 KB	Output is correct
5	Correct	33 ms	1840 KB	Output is correct

Subtask #8
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	65 ms	2908 KB	Output is correct
2	Correct	69 ms	2672 KB	Output is correct
3	Correct	81 ms	3004 KB	Output is correct
4	Correct	99 ms	2812 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	44 ms	3160 KB	Output is correct
2	Correct	31 ms	2968 KB	Output is correct
3	Correct	28 ms	2904 KB	Output is correct
4	Correct	131 ms	3576 KB	Output is correct
5	Correct	80 ms	3248 KB	Output is correct

Subtask #10
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	44 ms	3464 KB	Output is correct
2	Correct	36 ms	3424 KB	Output is correct
3	Correct	30 ms	3420 KB	Output is correct
4	Correct	136 ms	3596 KB	Output is correct
5	Correct	103 ms	3412 KB	Output is correct

Subtask #11
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	53 ms	3416 KB	Output is correct
2	Correct	40 ms	3408 KB	Output is correct
3	Correct	32 ms	3420 KB	Output is correct
4	Correct	157 ms	3512 KB	Output is correct
5	Correct	106 ms	3420 KB	Output is correct

Subtask #12
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	279 ms	15956 KB	Output is correct
2	Correct	187 ms	15956 KB	Output is correct
3	Correct	166 ms	15956 KB	Output is correct
4	Correct	603 ms	15956 KB	Output is correct
5	Correct	480 ms	15956 KB	Output is correct

Subtask #13
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	228 ms	15960 KB	Output is correct
2	Correct	254 ms	16124 KB	Output is correct
3	Correct	161 ms	15952 KB	Output is correct
4	Correct	641 ms	16176 KB	Output is correct
5	Correct	534 ms	15956 KB	Output is correct

Subtask #14
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	332 ms	19024 KB	Output is correct
2	Correct	243 ms	19024 KB	Output is correct
3	Correct	210 ms	19216 KB	Output is correct
4	Correct	871 ms	19024 KB	Output is correct
5	Correct	625 ms	19256 KB	Output is correct

Subtask #15
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	321 ms	19024 KB	Output is correct
2	Correct	327 ms	19216 KB	Output is correct
3	Correct	227 ms	19280 KB	Output is correct
4	Correct	840 ms	19072 KB	Output is correct
5	Correct	708 ms	19024 KB	Output is correct

Subtask #16
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	396 ms	22352 KB	Output is correct
2	Correct	315 ms	22352 KB	Output is correct
3	Correct	311 ms	22356 KB	Output is correct
4	Execution timed out	1022 ms	22352 KB	Time limit exceeded
5	Halted	0 ms	0 KB	-

Subtask #17
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	323 ms	22356 KB	Output is correct
2	Correct	328 ms	22352 KB	Output is correct
3	Correct	259 ms	22356 KB	Output is correct
4	Correct	980 ms	22380 KB	Output is correct
5	Correct	834 ms	22356 KB	Output is correct

Subtask #18
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	466 ms	25424 KB	Output is correct
2	Correct	344 ms	25376 KB	Output is correct
3	Correct	282 ms	25424 KB	Output is correct
4	Execution timed out	1059 ms	25348 KB	Time limit exceeded
5	Halted	0 ms	0 KB	-

Subtask #19
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	366 ms	25516 KB	Output is correct
2	Correct	400 ms	25424 KB	Output is correct
3	Correct	276 ms	25424 KB	Output is correct
4	Execution timed out	1072 ms	25464 KB	Time limit exceeded
5	Halted	0 ms	0 KB	-

Subtask #20
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	557 ms	31532 KB	Output is correct
2	Correct	438 ms	31824 KB	Output is correct
3	Correct	383 ms	31568 KB	Output is correct
4	Execution timed out	1029 ms	31596 KB	Time limit exceeded
5	Halted	0 ms	0 KB	-

Subtask #21
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	487 ms	31612 KB	Output is correct
2	Correct	467 ms	31656 KB	Output is correct
3	Correct	378 ms	31688 KB	Output is correct
4	Execution timed out	1055 ms	31680 KB	Time limit exceeded
5	Halted	0 ms	0 KB	-

답안 #1010110

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