답안 #550800

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
550800	2022-04-19T08:36:40 Z	CyberSleeper	Mobile (BOI12_mobile)	C++14	90 / 100	412 ms	16060 KB

mobile

#include <bits/stdc++.h>
#define fastio      ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL)
#define debug(x)    cout << "Line " << __LINE__ << ", " << #x << " is " << x << endl
#define all(x)      x.begin(), x.end()
#define fi          first
#define se          second
#define mp          make_pair
#define pb          push_back
#define ll          long long
#define ull         unsigned long long
#define pll         pair<ll, ll>
#define pii         pair<int, int>
#define pld         pair<ld, ld>
#define ld          double
#define nl          endl
#define tb          '\t'
#define sp          ' '
#define sqr(x)      (x)*(x)
#define arr3        array<int, 3>
using namespace std;
 
const int MX=1000005, MOD=1000000007, BLOCK=160, INF=2e9+7, LG=62;
const ll INFF=1000000000000000007;
const ld ERR=1e-3, pi=3.14159265358979323846;

int N;
int L;
pll A[MX];

int main(){
    fastio;
    cin >> N >> L;
    for(int i=1; i<=N; i++){
        cin >> A[i].fi >> A[i].se;
    }
    ld le=0, ri=1e10, mi, ans;
    while(le+ERR<=ri){
        mi=(le+ri)/2;
        ld best=0;
        for(int i=1; i<=N; i++){
            ld dist=sqrt(mi*mi - A[i].se*A[i].se);
            ld lef=A[i].fi-dist, rig=A[i].fi+dist;
            if(lef<=best)
                best=max(best, rig);
        }
        if(L<=best){
            ri=mi;
            ans=mi;
        }else
            le=mi;
    }
    cout << fixed << setprecision(3) << ans << nl;
}

Subtask #1
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	212 KB	Output is correct
2	Correct	1 ms	212 KB	Output is correct
3	Correct	1 ms	212 KB	Output is correct
4	Correct	1 ms	212 KB	Output is correct

Subtask #2
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	0 ms	212 KB	Output is correct
3	Correct	1 ms	212 KB	Output is correct
4	Correct	0 ms	212 KB	Output is correct

Subtask #3
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	340 KB	Output is correct
2	Correct	1 ms	340 KB	Output is correct
3	Correct	1 ms	340 KB	Output is correct
4	Correct	1 ms	340 KB	Output is correct

Subtask #4
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	340 KB	Output is correct
2	Correct	2 ms	340 KB	Output is correct
3	Correct	2 ms	340 KB	Output is correct
4	Correct	2 ms	340 KB	Output is correct

Subtask #5
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	340 KB	Output is correct
2	Correct	2 ms	340 KB	Output is correct
3	Correct	2 ms	340 KB	Output is correct
4	Correct	3 ms	340 KB	Output is correct

Subtask #6
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	340 KB	Output is correct
2	Correct	2 ms	340 KB	Output is correct
3	Correct	2 ms	340 KB	Output is correct
4	Correct	2 ms	340 KB	Output is correct
5	Correct	2 ms	340 KB	Output is correct

Subtask #7
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	31 ms	1492 KB	Output is correct
2	Correct	22 ms	1400 KB	Output is correct
3	Correct	14 ms	1124 KB	Output is correct
4	Correct	27 ms	1512 KB	Output is correct
5	Correct	15 ms	1104 KB	Output is correct

Subtask #8
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	27 ms	1492 KB	Output is correct
2	Correct	25 ms	1364 KB	Output is correct
3	Correct	29 ms	1592 KB	Output is correct
4	Correct	34 ms	1548 KB	Output is correct
5	Correct	32 ms	1636 KB	Output is correct

Subtask #9
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	21 ms	1704 KB	Output is correct
2	Correct	24 ms	1492 KB	Output is correct
3	Correct	24 ms	1636 KB	Output is correct
4	Correct	44 ms	1864 KB	Output is correct
5	Correct	40 ms	1620 KB	Output is correct

Subtask #10
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	33 ms	1872 KB	Output is correct
2	Correct	32 ms	1884 KB	Output is correct
3	Correct	26 ms	1876 KB	Output is correct
4	Correct	40 ms	1872 KB	Output is correct
5	Correct	41 ms	1876 KB	Output is correct

Subtask #11
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	29 ms	1876 KB	Output is correct
2	Correct	35 ms	1872 KB	Output is correct
3	Correct	32 ms	1880 KB	Output is correct
4	Correct	43 ms	1888 KB	Output is correct
5	Correct	32 ms	1876 KB	Output is correct

Subtask #12
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Incorrect	122 ms	8112 KB	Output isn't correct
2	Halted	0 ms	0 KB	-

Subtask #13
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	161 ms	8140 KB	Output is correct
2	Correct	235 ms	8136 KB	Output is correct
3	Correct	134 ms	8132 KB	Output is correct
4	Correct	203 ms	8072 KB	Output is correct
5	Correct	184 ms	8144 KB	Output is correct

Subtask #14
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	145 ms	9708 KB	Output is correct
2	Correct	197 ms	9680 KB	Output is correct
3	Correct	196 ms	9676 KB	Output is correct
4	Correct	235 ms	9748 KB	Output is correct
5	Correct	215 ms	9652 KB	Output is correct

Subtask #15
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	192 ms	9704 KB	Output is correct
2	Correct	274 ms	9612 KB	Output is correct
3	Correct	177 ms	9584 KB	Output is correct
4	Correct	253 ms	9776 KB	Output is correct
5	Correct	266 ms	9680 KB	Output is correct

Subtask #16
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	178 ms	11212 KB	Output is correct
2	Correct	230 ms	11332 KB	Output is correct
3	Correct	211 ms	11212 KB	Output is correct
4	Correct	265 ms	11264 KB	Output is correct
5	Correct	253 ms	11272 KB	Output is correct

Subtask #17
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	244 ms	11224 KB	Output is correct
2	Correct	289 ms	11340 KB	Output is correct
3	Correct	211 ms	11268 KB	Output is correct
4	Correct	295 ms	11268 KB	Output is correct
5	Correct	303 ms	11268 KB	Output is correct

Subtask #18
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Incorrect	244 ms	12860 KB	Output isn't correct
2	Halted	0 ms	0 KB	-

Subtask #19
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	239 ms	12832 KB	Output is correct
2	Correct	404 ms	12876 KB	Output is correct
3	Correct	225 ms	12808 KB	Output is correct
4	Correct	319 ms	12832 KB	Output is correct
5	Correct	302 ms	12832 KB	Output is correct

Subtask #20
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	244 ms	15956 KB	Output is correct
2	Correct	349 ms	15956 KB	Output is correct
3	Correct	285 ms	15948 KB	Output is correct
4	Correct	407 ms	16032 KB	Output is correct
5	Correct	347 ms	15956 KB	Output is correct

Subtask #21
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	314 ms	15932 KB	Output is correct
2	Correct	412 ms	15960 KB	Output is correct
3	Correct	316 ms	16032 KB	Output is correct
4	Correct	403 ms	15876 KB	Output is correct
5	Correct	351 ms	16060 KB	Output is correct

답안 #550800

Compilation message