Submission #894769

#	Time	Username	Problem	Language	Result	Execution time	Memory
894769		MilosMilutinovic	Golf (JOI17_golf)	C++14	30 / 100	10045 ms	7800 KiB

golf

#include <bits/stdc++.h>

using namespace std;

int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);
  int s, t, u, v;
  cin >> s >> t >> u >> v;
  int n;
  cin >> n;
  vector<int> a(n), b(n), c(n), d(n);
  for (int i = 0; i < n; i++) {
    cin >> a[i] >> c[i] >> b[i] >> d[i];
  }
  vector<int> xs;
  xs.push_back(s);
  xs.push_back(t);
  xs.push_back(u);
  xs.push_back(v);
  for (int i = 0; i < n; i++) {
    xs.push_back(a[i]);
    xs.push_back(b[i]);
    xs.push_back(c[i]);
    xs.push_back(d[i]);
  }
  sort(xs.begin(), xs.end());
  xs.erase(unique(xs.begin(), xs.end()), xs.end());
  sort(xs.begin(), xs.end());
  xs.erase(unique(xs.begin(), xs.end()), xs.end());
  s = (int) (lower_bound(xs.begin(), xs.end(), s) - xs.begin());
  t = (int) (lower_bound(xs.begin(), xs.end(), t) - xs.begin());
  u = (int) (lower_bound(xs.begin(), xs.end(), u) - xs.begin());
  v = (int) (lower_bound(xs.begin(), xs.end(), v) - xs.begin());
  for (int i = 0; i < n; i++) {
    a[i] = (int) (lower_bound(xs.begin(), xs.end(), a[i]) - xs.begin());
    b[i] = (int) (lower_bound(xs.begin(), xs.end(), b[i]) - xs.begin());
    c[i] = (int) (lower_bound(xs.begin(), xs.end(), c[i]) - xs.begin());
    d[i] = (int) (lower_bound(xs.begin(), xs.end(), d[i]) - xs.begin());
  }
  int k = (int) xs.size();
  vector<array<int, 3>> ver;
  vector<array<int, 3>> hor;
  for (int i = 0; i < n; i++) {
    {
      // left
      int from = 0;
      for (int j = 0; j < n; j++) {
        if (d[j] < b[i] && a[j] < a[i] && a[i] < c[j]) {
          from = max(from, d[j]);
        }
      }
      int to = k - 1;
      for (int j = 0; j < n; j++) {
        if (b[j] > d[i] && a[j] < a[i] && a[i] < c[j]) {
          to = min(to, b[j]);
        }
      }
      ver.push_back({a[i], from, to});
    }
    {
      // right
      int from = 0;
      for (int j = 0; j < n; j++) {
        if (d[j] < b[i] && a[j] < c[i] && c[i] < c[j]) {
          from = max(from, d[j]);
        }
      }
      int to = k - 1;
      for (int j = 0; j < n; j++) {
        if (b[j] > d[i] && a[j] < c[i] && c[i] < c[j]) {
          to = min(to, b[j]);
        }
      }
      ver.push_back({c[i], from, to});
    }
    {
      // bottom
      int from = 0;
      for (int j = 0; j < n; j++) {
        if (c[j] < a[i] && b[j] < b[i] && b[i] < d[j]) {
          from = max(from, c[j]);
        }
      }
      int to = k - 1;
      for (int j = 0; j < n; j++) {
        if (a[j] > c[i] && b[j] < b[i] && b[i] < d[j]) {
          to = min(to, a[j]);
        }
      }
      hor.push_back({b[i], from, to});
    }
    {
      // top
      int from = 0;
      for (int j = 0; j < n; j++) {
        if (c[j] < a[i] && b[j] < d[i] && d[i] < d[j]) {
          from = max(from, c[j]);
        }
      }
      int to = k - 1;
      for (int j = 0; j < n; j++) {
        if (a[j] > c[i] && b[j] < d[i] && d[i] < d[j]) {
          to = min(to, a[j]);
        }
      }
      hor.push_back({d[i], from, to});
    }
  }
  {
    // start ver
    int from = 0;
    for (int i = 0; i < n; i++) {
      if (d[i] < t && a[i] < s && s < c[i]) {
        from = max(from, d[i]);
      }
    }
    int to = k - 1;
    for (int i = 0; i < n; i++) {
      if (b[i] > t && a[i] < s && s < c[i]) {
        to = min(to, b[i]);
      }
    }
    ver.push_back({s, from, to});
  }
  {
    // start hor
    int from = 0;
    for (int i = 0; i < n; i++) {
      if (c[i] < s && b[i] < t && t < d[i]) {
        from = max(from, c[i]);
      }
    }
    int to = k - 1;
    for (int i = 0; i < n; i++) {
      if (a[i] > s && b[i] < t && t < d[i]) {
        to = min(to, a[i]);
      }
    }
    hor.push_back({t, from, to});
  }
  {
    // end ver
    int from = 0;
    for (int i = 0; i < n; i++) {
      if (d[i] < v && a[i] < u && u < c[i]) {
        from = max(from, d[i]);
      }
    }
    int to = k - 1;
    for (int i = 0; i < n; i++) {
      if (b[i] > v && a[i] < u && u < c[i]) {
        to = min(to, b[i]);
      }
    }
    ver.push_back({u, from, to});
  }
  {
    // end hor
    int from = 0;
    for (int i = 0; i < n; i++) {
      if (c[i] < u && b[i] < v && v < d[i]) {
        from = max(from, c[i]);
      }
    }
    int to = k - 1;
    for (int i = 0; i < n; i++) {
      if (a[i] > u && b[i] < v && v < d[i]) {
        to = min(to, a[i]);
      }
    }
    hor.push_back({v, from, to});
  }
  sort(hor.begin(), hor.end());
  sort(ver.begin(), ver.end());
  hor.erase(unique(hor.begin(), hor.end()), hor.end());
  ver.erase(unique(ver.begin(), ver.end()), ver.end());
  int sh = (int) hor.size();
  int sv = (int) ver.size();
  int m = sh + sv;
  vector<int> dist(m, -1);
  for (int i = 0; i < sh; i++) {
    if (hor[i][0] == t && hor[i][1] <= s && s <= hor[i][2]) {
      dist[i] = 1;
    }
  }
  for (int i = 0; i < sv; i++) {
    if (ver[i][0] == s && ver[i][1] <= t && t <= ver[i][2]) {
      dist[sh + i] = 1;
    }
  }
  vector<int> que;
  for (int i = 0; i < m; i++) {
    if (dist[i] == 1) {
      que.push_back(i);
    }
  }
  for (int q = 0; q < (int) que.size(); q++) {
    int x = que[q];
    if (x < sh) {
      for (int i = 0; i < sv; i++) {
        if (dist[sh + i] == -1 && hor[x][1] <= ver[i][0] && ver[i][0] <= hor[x][2]
                               && ver[i][1] <= hor[x][0] && hor[x][0] <= ver[i][2]) {
          dist[sh + i] = dist[x] + 1;
          que.push_back(sh + i);
        }
      }
    } else {
      x -= sh;
      for (int i = 0; i < sh; i++) {
        if (dist[i] == -1 && ver[x][1] <= hor[i][0] && hor[i][0] <= ver[x][2] 
                          && hor[i][1] <= ver[x][0] && ver[x][0] <= hor[i][2]) {
          dist[i] = dist[x + sh] + 1;
          que.push_back(i);
        }
      }
    }
  }
  int res = (int) 1e9;
  for (int i = 0; i < sh; i++) {
    if (hor[i][0] == v && hor[i][1] <= u && u <= hor[i][2]) {
      res = min(res, dist[i]);
    }
  }
  for (int i = 0; i < sv; i++) {
    if (ver[i][0] == u && ver[i][1] <= v && v <= ver[i][2]) {
      res = min(res, dist[i + sh]);
    }
  }
  cout << res << '\n';
  return 0;
}

• Subtask 1: 10 / 10
• Subtask 2: 20 / 20
• Subtask 3: 0 / 70