답안 #550801

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
550801	2022-04-19T08:37:53 Z	CyberSleeper	Mobile (BOI12_mobile)	C++14	100 / 100	411 ms	24120 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(4) << ans << nl;
}

Subtask #1
4.0 / 4.0

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

Subtask #2
4.0 / 4.0

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

Subtask #3
4.0 / 4.0

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

Subtask #6
5.0 / 5.0

#	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
5	Correct	2 ms	340 KB	Output is correct

Subtask #7
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	29 ms	1492 KB	Output is correct
2	Correct	23 ms	1516 KB	Output is correct
3	Correct	17 ms	1108 KB	Output is correct
4	Correct	31 ms	1488 KB	Output is correct
5	Correct	14 ms	1108 KB	Output is correct

Subtask #8
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	23 ms	1552 KB	Output is correct
2	Correct	25 ms	1388 KB	Output is correct
3	Correct	26 ms	1596 KB	Output is correct
4	Correct	30 ms	1480 KB	Output is correct
5	Correct	33 ms	1652 KB	Output is correct

Subtask #9
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	22 ms	1620 KB	Output is correct
2	Correct	27 ms	1488 KB	Output is correct
3	Correct	23 ms	1620 KB	Output is correct
4	Correct	39 ms	1864 KB	Output is correct
5	Correct	28 ms	1700 KB	Output is correct

Subtask #10
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	29 ms	1876 KB	Output is correct
2	Correct	42 ms	1872 KB	Output is correct
3	Correct	32 ms	1876 KB	Output is correct
4	Correct	53 ms	1888 KB	Output is correct
5	Correct	39 ms	1868 KB	Output is correct

Subtask #11
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	30 ms	1996 KB	Output is correct
2	Correct	28 ms	1844 KB	Output is correct
3	Correct	33 ms	1784 KB	Output is correct
4	Correct	42 ms	1876 KB	Output is correct
5	Correct	35 ms	1876 KB	Output is correct

Subtask #12
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	146 ms	8012 KB	Output is correct
2	Correct	165 ms	15924 KB	Output is correct
3	Correct	151 ms	15304 KB	Output is correct
4	Correct	215 ms	17608 KB	Output is correct
5	Correct	179 ms	15052 KB	Output is correct

Subtask #13
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	150 ms	8012 KB	Output is correct
2	Correct	235 ms	8112 KB	Output is correct
3	Correct	177 ms	8136 KB	Output is correct
4	Correct	187 ms	8136 KB	Output is correct
5	Correct	166 ms	8136 KB	Output is correct

Subtask #14
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	150 ms	9600 KB	Output is correct
2	Correct	182 ms	9704 KB	Output is correct
3	Correct	180 ms	9604 KB	Output is correct
4	Correct	231 ms	9672 KB	Output is correct
5	Correct	202 ms	9772 KB	Output is correct

Subtask #15
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	192 ms	9700 KB	Output is correct
2	Correct	260 ms	9716 KB	Output is correct
3	Correct	178 ms	9712 KB	Output is correct
4	Correct	231 ms	9608 KB	Output is correct
5	Correct	211 ms	9704 KB	Output is correct

Subtask #16
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	181 ms	11268 KB	Output is correct
2	Correct	263 ms	11236 KB	Output is correct
3	Correct	202 ms	11272 KB	Output is correct
4	Correct	279 ms	11340 KB	Output is correct
5	Correct	237 ms	11268 KB	Output is correct

Subtask #17
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	224 ms	11340 KB	Output is correct
2	Correct	298 ms	11216 KB	Output is correct
3	Correct	192 ms	11260 KB	Output is correct
4	Correct	268 ms	11264 KB	Output is correct
5	Correct	263 ms	11172 KB	Output is correct

Subtask #18
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	195 ms	12748 KB	Output is correct
2	Correct	266 ms	24020 KB	Output is correct
3	Correct	240 ms	24120 KB	Output is correct
4	Correct	341 ms	22552 KB	Output is correct
5	Correct	280 ms	23884 KB	Output is correct

Subtask #19
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	247 ms	12748 KB	Output is correct
2	Correct	358 ms	12812 KB	Output is correct
3	Correct	229 ms	12912 KB	Output is correct
4	Correct	305 ms	12752 KB	Output is correct
5	Correct	274 ms	12748 KB	Output is correct

Subtask #20
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	265 ms	15960 KB	Output is correct
2	Correct	296 ms	15960 KB	Output is correct
3	Correct	290 ms	16084 KB	Output is correct
4	Correct	384 ms	15956 KB	Output is correct
5	Correct	350 ms	16012 KB	Output is correct

Subtask #21
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	321 ms	15908 KB	Output is correct
2	Correct	411 ms	16012 KB	Output is correct
3	Correct	304 ms	15940 KB	Output is correct
4	Correct	391 ms	16076 KB	Output is correct
5	Correct	354 ms	15948 KB	Output is correct

답안 #550801

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