답안 #1101169

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1101169	2024-10-15T17:15:54 Z	BLOBVISGOD	Mobile (BOI12_mobile)	C++17	100 / 100	467 ms	35424 KB

mobile

#include "bits/stdc++.h"
#pragma GCC optimize("Ofast")
using namespace std;
#define rep(i,a,b) for(int i=(a); i<(b); ++i)
#define all(x) x.begin(),x.end()
#define sz(x) int(x.size())
typedef long long ll;
typedef unsigned long long ull;
typedef vector<int> vi;
typedef vector<vi> vvi;

int main(){
    cin.tie(NULL),cin.sync_with_stdio(false);
    
    int n,l; cin >> n >> l;
    vector<array<ll,2>> a(n);
    rep(i,0,n) rep(j,0,2) cin >> a[i][j];
    rep(i,0,n) a[i][1] = a[i][1]*a[i][1];
    sort(all(a));

    double lo = 0, hi = 1.5e9;
    rep(iter,0,46){
        double mid = (lo+hi)/2, mid2 = mid*mid;
        double r = 0;
        rep(i,0,n) if (a[i][1] < mid2){
            double d = sqrt(mid2 - a[i][1]);
            if (a[i][0]-d <= r)  r = max(r,a[i][0]+d);
        }
        if (r < l) lo = mid;
        else hi = mid;
    }
    cout << setprecision(15) << lo << '\n';
}

Subtask #1
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	336 KB	Output is correct
2	Correct	1 ms	336 KB	Output is correct
3	Correct	1 ms	336 KB	Output is correct
4	Correct	1 ms	336 KB	Output is correct

Subtask #2
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	336 KB	Output is correct
2	Correct	1 ms	456 KB	Output is correct
3	Correct	1 ms	336 KB	Output is correct
4	Correct	1 ms	336 KB	Output is correct

Subtask #3
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	336 KB	Output is correct
2	Correct	2 ms	336 KB	Output is correct
3	Correct	1 ms	336 KB	Output is correct
4	Correct	2 ms	336 KB	Output is correct

Subtask #4
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	336 KB	Output is correct
2	Correct	3 ms	336 KB	Output is correct
3	Correct	2 ms	336 KB	Output is correct
4	Correct	3 ms	336 KB	Output is correct

Subtask #5
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	336 KB	Output is correct
2	Correct	3 ms	336 KB	Output is correct
3	Correct	2 ms	336 KB	Output is correct
4	Correct	2 ms	336 KB	Output is correct

Subtask #6
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	336 KB	Output is correct
2	Correct	3 ms	336 KB	Output is correct
3	Correct	2 ms	336 KB	Output is correct
4	Correct	2 ms	336 KB	Output is correct
5	Correct	2 ms	336 KB	Output is correct

Subtask #7
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	38 ms	1616 KB	Output is correct
2	Correct	29 ms	1616 KB	Output is correct
3	Correct	20 ms	1104 KB	Output is correct
4	Correct	21 ms	1616 KB	Output is correct
5	Correct	22 ms	1104 KB	Output is correct

Subtask #8
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	25 ms	1616 KB	Output is correct
2	Correct	25 ms	1360 KB	Output is correct
3	Correct	24 ms	1616 KB	Output is correct
4	Correct	34 ms	1616 KB	Output is correct
5	Correct	24 ms	1616 KB	Output is correct

Subtask #9
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	45 ms	1616 KB	Output is correct
2	Correct	43 ms	1616 KB	Output is correct
3	Correct	32 ms	1616 KB	Output is correct
4	Correct	25 ms	1872 KB	Output is correct
5	Correct	39 ms	1784 KB	Output is correct

Subtask #10
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	38 ms	1872 KB	Output is correct
2	Correct	54 ms	1872 KB	Output is correct
3	Correct	35 ms	1872 KB	Output is correct
4	Correct	26 ms	1872 KB	Output is correct
5	Correct	32 ms	1872 KB	Output is correct

Subtask #11
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	47 ms	1872 KB	Output is correct
2	Correct	42 ms	1872 KB	Output is correct
3	Correct	36 ms	1872 KB	Output is correct
4	Correct	26 ms	1872 KB	Output is correct
5	Correct	34 ms	1872 KB	Output is correct

Subtask #12
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	237 ms	8272 KB	Output is correct
2	Correct	199 ms	15820 KB	Output is correct
3	Correct	215 ms	15312 KB	Output is correct
4	Correct	122 ms	17624 KB	Output is correct
5	Correct	150 ms	14928 KB	Output is correct

Subtask #13
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	206 ms	8072 KB	Output is correct
2	Correct	260 ms	14664 KB	Output is correct
3	Correct	177 ms	14152 KB	Output is correct
4	Correct	135 ms	17496 KB	Output is correct
5	Correct	143 ms	15432 KB	Output is correct

Subtask #14
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	283 ms	9808 KB	Output is correct
2	Correct	248 ms	19016 KB	Output is correct
3	Correct	253 ms	18416 KB	Output is correct
4	Correct	159 ms	21576 KB	Output is correct
5	Correct	219 ms	17736 KB	Output is correct

Subtask #15
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	240 ms	9808 KB	Output is correct
2	Correct	294 ms	17636 KB	Output is correct
3	Correct	235 ms	16456 KB	Output is correct
4	Correct	195 ms	21484 KB	Output is correct
5	Correct	162 ms	18504 KB	Output is correct

Subtask #16
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	315 ms	11344 KB	Output is correct
2	Correct	267 ms	22152 KB	Output is correct
3	Correct	341 ms	21384 KB	Output is correct
4	Correct	167 ms	24720 KB	Output is correct
5	Correct	207 ms	20376 KB	Output is correct

Subtask #17
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	275 ms	11344 KB	Output is correct
2	Correct	335 ms	20636 KB	Output is correct
3	Correct	271 ms	19728 KB	Output is correct
4	Correct	174 ms	24648 KB	Output is correct
5	Correct	211 ms	21320 KB	Output is correct

Subtask #18
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	374 ms	12880 KB	Output is correct
2	Correct	311 ms	25160 KB	Output is correct
3	Correct	349 ms	24392 KB	Output is correct
4	Correct	207 ms	28496 KB	Output is correct
5	Correct	276 ms	24104 KB	Output is correct

Subtask #19
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	341 ms	12880 KB	Output is correct
2	Correct	377 ms	23368 KB	Output is correct
3	Correct	304 ms	22444 KB	Output is correct
4	Correct	248 ms	28232 KB	Output is correct
5	Correct	264 ms	24392 KB	Output is correct

Subtask #20
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	467 ms	15952 KB	Output is correct
2	Correct	453 ms	31460 KB	Output is correct
3	Correct	430 ms	30556 KB	Output is correct
4	Correct	252 ms	35292 KB	Output is correct
5	Correct	311 ms	29660 KB	Output is correct

Subtask #21
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	435 ms	15952 KB	Output is correct
2	Correct	452 ms	29256 KB	Output is correct
3	Correct	357 ms	28260 KB	Output is correct
4	Correct	281 ms	35424 KB	Output is correct
5	Correct	315 ms	30792 KB	Output is correct

답안 #1101169

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