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답안 #976796

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
976796 2024-05-07T06:37:36 Z Br3ad Mobile (BOI12_mobile) C++17
61 / 100
 620 ms 35944 KB 
#include <iostream>
#include <fstream>
#include <iomanip>
#include <algorithm>
#include <functional>
#include <cstring>
#include <string>
#include <cmath>
#include <vector>
#include <queue>
#include <stack>
#include <set>
#include <map>

using namespace std;
#define ll long long
#define ull unsigned long long
#define f first
#define s second
#define PF push_front
#define PB push_back
#define MP make_pair
#define max(a, b) ((a > b)? a : b)
#define min(a, b) ((a < b)? a : b)
#define max3(a, b, c) max(max(a, b), c)
#define min3(a, b, c) min(min(a, b), c)

const int N = 1e5 + 5;
const int M = 1e9 + 7; 
const int inf = 0x3f3f3f3f;
const ll int INF = 1e18;

double bin(double l, double r, function<bool(double)> f){
    while(r - l > 1e-3){
        double mid = (r + l)/2;
        if(f(mid)){
            r = mid;
        }else {
            l = mid;
        }
    }
    return l;
}

int main(){
    
    ios::sync_with_stdio(false);
    cin.tie(NULL);
    
    // ifstream cin();
    // ofstream cout();
    
    vector<pair<double, double>> v;
    int n;
    double L;
    cin >> n >> L;
    for(int i = 0; i < n; i++){
        double x, y;
        cin >> x >> y;
        v.PB(MP(x, y));
    }

    double ans = bin(1, 1e9, [&](double d){
        double cur = 0;
        for(int i = 0; i < n; i++){
            double dis = sqrt(d*d - v[i].s * v[i].s);
            double left = v[i].f - dis, right = v[i].f + dis;
            if(left <= cur) cur = max(cur, right);
        }

        return (cur >= L);
    });
    
    cout << fixed << setprecision(3);
    cout << ans << endl;
}

Subtask #1
0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 0 ms 344 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
4.0 / 4.0

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

Subtask #5
4.0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 604 KB Output is correct
2 Correct 3 ms 668 KB Output is correct
3 Correct 3 ms 604 KB Output is correct
4 Correct 3 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 3 ms 604 KB Output is correct
3 Correct 2 ms 604 KB Output is correct
4 Correct 4 ms 604 KB Output is correct
5 Correct 3 ms 604 KB Output is correct

Subtask #7
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 39 ms 2520 KB Output is correct
2 Correct 36 ms 2520 KB Output is correct
3 Correct 24 ms 1496 KB Output is correct
4 Correct 40 ms 2508 KB Output is correct
5 Correct 22 ms 1500 KB Output is correct

Subtask #8
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 36 ms 2580 KB Output is correct
2 Incorrect 35 ms 3288 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #9
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 36 ms 2512 KB Output is correct
2 Incorrect 45 ms 2516 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #10
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 47 ms 2508 KB Output is correct
2 Correct 46 ms 2520 KB Output is correct
3 Correct 43 ms 2532 KB Output is correct
4 Correct 58 ms 3588 KB Output is correct
5 Correct 49 ms 2516 KB Output is correct

Subtask #11
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 50 ms 2456 KB Output is correct
2 Correct 45 ms 2516 KB Output is correct
3 Correct 45 ms 2512 KB Output is correct
4 Correct 61 ms 4096 KB Output is correct
5 Correct 57 ms 3592 KB Output is correct

Subtask #12
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 207 ms 9988 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 238 ms 10432 KB Output is correct
2 Correct 280 ms 10428 KB Output is correct
3 Correct 247 ms 9452 KB Output is correct
4 Correct 273 ms 9408 KB Output is correct
5 Correct 285 ms 9560 KB Output is correct

Subtask #14
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 242 ms 18916 KB Output is correct
2 Correct 279 ms 17768 KB Output is correct
3 Correct 272 ms 18616 KB Output is correct
4 Correct 347 ms 18600 KB Output is correct
5 Correct 295 ms 17592 KB Output is correct

Subtask #15
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 284 ms 17908 KB Output is correct
2 Correct 333 ms 18632 KB Output is correct
3 Correct 258 ms 17444 KB Output is correct
4 Correct 340 ms 17056 KB Output is correct
5 Correct 299 ms 18360 KB Output is correct

Subtask #16
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 291 ms 17080 KB Output is correct
2 Incorrect 320 ms 17540 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #17
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 331 ms 17336 KB Output is correct
2 Correct 398 ms 17408 KB Output is correct
3 Correct 314 ms 17936 KB Output is correct
4 Incorrect 387 ms 17716 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #18
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 325 ms 18844 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 374 ms 18848 KB Output is correct
2 Correct 447 ms 18356 KB Output is correct
3 Correct 347 ms 17804 KB Output is correct
4 Correct 454 ms 18356 KB Output is correct
5 Correct 400 ms 18356 KB Output is correct

Subtask #20
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 403 ms 18112 KB Output is correct
2 Correct 467 ms 31796 KB Output is correct
3 Correct 450 ms 30804 KB Output is correct
4 Correct 560 ms 35944 KB Output is correct
5 Correct 533 ms 29872 KB Output is correct

Subtask #21
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 467 ms 18100 KB Output is correct
2 Correct 551 ms 17076 KB Output is correct
3 Correct 446 ms 17304 KB Output is correct
4 Incorrect 620 ms 18076 KB Output isn't correct
5 Halted 0 ms 0 KB -