oj.uz

답안 #895022

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
895022 2023-12-29T10:44:18 Z d4xn Wish (LMIO19_noras) C++17
0 / 100
 1 ms 6492 KB 
#include <bits/stdc++.h>
using namespace std;
 
#define int long long
 
const int N = 1e6+6;
 
int n, R, a[N], b[N], c[N], d[N];
map<int, int> f;
 
signed main() {
  ios::sync_with_stdio(false); cin.tie(nullptr);
 
  cin >> n >> R;
  for (int i = 0; i < n; i++) {
    cin >> a[i] >> b[i] >> c[i] >> d[i];
 
    int x = c[i]-a[i];
    int y = d[i]-b[i];
  
    int l = 0;
    int r = 1e9;
    while (l < r) {
      int mid = (l+r)/2;
 
      bool in1 = (abs(a[i] + x*mid) + abs(b[i] + y*mid)) <= R;
      bool in2 = (abs(a[i] + x*(mid+1)) + abs(b[i] + y*(mid+1))) <= R;

      if (in1 && in2) r = mid;
      else if (in1 && !in2) r = mid;
      else if (!in1 && in2) l = r = mid+1;
      else {
        if (abs(a[i] + x*mid) + abs(b[i] + y*mid) <= 
        abs(a[i] + x*(mid+1)) + abs(b[i] + y*(mid+1))) {
          r = mid;
        }
        else {
          l = mid+1;
        }
      }
    }
    int fst = l;
 
    l = 0;
    r = 1e9;
    while (l < r) {
      int mid = (l+r)/2;
      
      bool in1 = (abs(a[i] + x*mid) + abs(b[i] + y*mid)) <= R;
      bool in2 = (abs(a[i] + x*(mid+1)) + abs(b[i] + y*(mid+1))) <= R;

      if (in1 && in2) l = mid+1;
      else if (in1 && !in2) l = r = mid;
      else if (!in1 && in2) l = mid+1;
      else {
        if (abs(a[i] + x*mid) + abs(b[i] + y*mid) < 
        abs(a[i] + x*(mid+1)) + abs(b[i] + y*(mid+1))) {
          r = mid;
        }
        else {
          l = mid+1;
        }
      }
    }
    int lst = l;
 
    bool in1 = (abs(a[i] + x*fst) + abs(b[i] + y*fst)) <= R;
    if (!in1) continue;

    f[fst]++;
    f[lst+1]--;
  }
 
  int ans = 0;
  int sum = 0;
  for (auto& [x, y] : f) {
    sum += y;
    ans = max(ans, sum);
  }
  cout << ans << "\n";
}

Subtask #1
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 6492 KB Output is correct
2 Correct 1 ms 6492 KB Output is correct
3 Incorrect 1 ms 6492 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #2
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 6492 KB Output is correct
2 Correct 1 ms 6492 KB Output is correct
3 Incorrect 1 ms 6492 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #3
0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 6492 KB Output is correct
2 Correct 1 ms 6492 KB Output is correct
3 Incorrect 1 ms 6492 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #4
0 / 32.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 6492 KB Output is correct
2 Correct 1 ms 6492 KB Output is correct
3 Incorrect 1 ms 6492 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #5
0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 6492 KB Output is correct
2 Correct 1 ms 6492 KB Output is correct
3 Incorrect 1 ms 6492 KB Output isn't correct
4 Halted 0 ms 0 KB -