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답안 #965263

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
965263 2024-04-18T09:05:33 Z AtabayRajabli Wish (LMIO19_noras) C++17
0 / 100
 0 ms 348 KB 
#include <bits/stdc++.h>

// author : a1abay

#define all(v)      v.begin(), v.end()
#define GCD(a, b)   __gcd(a, b)
#define LCM(a, b)   (a*b / (__gcd(a, b)))
#define int         ll

typedef long long           ll;
typedef long double         ld;
const int inf =             1e9 + 7;
const int inff =            (int)1e18 + 7;
const int sz =              2e5 + 5;
using namespace             std;

int n;
ld r;
vector<array<int, 2>> v;

ld disc(ld a, ld b, ld c)
{
    return b * b - 4 * a * c;
}

ld get(ld a, ld b, ld d)
{
    return (-b + sqrtl(d)) / (2 * a);
}

ld get2(ld a, ld b, ld d)
{
    return (-b - sqrtl(d)) / (2 * a);
}

signed main()   
{       
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    
    cin >> n >> r;
    
    for(int i = 1; i <= n; i++)
    {
        int a, b, c, d;
        cin >> a >> b >> c >> d;
        c -= a;
        d -= b;
        int ds = disc(c * c + d * d, 2 * a * c + 2 * b * d, a * a + b * b - r * r);
        if(ds < 0)continue;
        ld x1 = get(c * c + d * d, 2 * a * c + 2 * b * d, ds);
        ld x2 = get2(c * c + d * d, 2 * a * c + 2 * b * d, ds);
        if(x2 < 0LL)continue;
        x1 = ceil(x1);
        x2 = floor(x2);
        if(x1 > x2)continue;
        x1 = max(x1, 0 * x1);
        v.push_back({(int)x1, 1});
        v.push_back({(int)x2 + 1, -1});
    }

    int s = 0, mx = 0;
    sort(all(v));
    for(auto i : v)
    {
        s += i[1];
        mx = max(mx, s);
    }
    cout << mx;
}

Subtask #1
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 0 ms 348 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 0 ms 348 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 0 ms 348 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 32.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 0 ms 348 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 0 ms 348 KB Output isn't correct
2 Halted 0 ms 0 KB -