Submission #965288

#	Time	Username	Problem	Language	Result	Execution time	Memory
965288		AtabayRajabli	Wish (LMIO19_noras)	C++17	93 / 100	232 ms	10568 KiB

noras

#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;

signed main()   
{       
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    
    cin >> n >> r;
    
    for(int i = 1; i <= n; i++)
    {
        ld x1, x2, y1, y2;
        cin >> x1 >> y1 >> x2 >> y2;
        x2 -= x1;
        y2 -= y1;
        ld a = x2 * x2 + y2 * y2;
        ld b = 2 * (x1 * x2 + y1 * y2);
        ld c = x1 * x1 + y1 * y1 - r * r;
        ld d = b * b - 4 * a * c;
        if(d < 0)continue;
        ld x = (- b - sqrtl(d)) / (2 * a);
        ld y = (- b + sqrtl(d)) / (2 * a);
        int xi = ceil(x);
        int yi = floor(y);
        if(xi > yi || yi < 0LL)continue;
        v.push_back({max(xi, 0LL), 1});
        v.push_back({yi + 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: 23 / 23
• Subtask 2: 23 / 23
• Subtask 3: 15 / 15
• Subtask 4: 32 / 32
• Subtask 5: 0 / 7