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답안 #894770

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
894770 2023-12-29T00:55:03 Z MilosMilutinovic Golf (JOI17_golf) C++14
30 / 100
 10000 ms 4456 KB 
#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);
    }
  }
  vector<set<pair<int, int>>> st_hor(4 * k);
  vector<set<pair<int, int>>> st_ver(4 * k);
  vector<int> qv;
  function<void(int, int, int, int, int, int, pair<int, int>)> Insert = [&](int t, int x, int l, int r, int ll, int rr, pair<int, int> p) {
    if (ll <= l && r <= rr) {
      if (t == 0) {
        st_hor[x].insert(p);
      } else {
        st_ver[x].insert(p);
      }
      return;
    }
    int mid = l + r >> 1;
    if (rr <= mid) {
      Insert(t, x << 1, l, mid, ll, rr, p);
    } else if (ll > mid) {
      Insert(t, x << 1 | 1, mid + 1, r, ll, rr, p);
    } else {
      Insert(t, x << 1, l, mid, ll, rr, p);
      Insert(t, x << 1 | 1, mid + 1, r, ll, rr, p);
    }
  };
  function<void(int, int, int, int, int, int, pair<int, int>)> Remove = [&](int t, int x, int l, int r, int ll, int rr, pair<int, int> p) {
    if (ll <= l && r <= rr) {
      if (t == 0) {
        st_hor[x].erase(p);
      } else {
        st_ver[x].erase(p);
      }
      return;
    }
    int mid = l + r >> 1;
    if (rr <= mid) {
      Remove(t, x << 1, l, mid, ll, rr, p);
    } else if (ll > mid) {
      Remove(t, x << 1 | 1, mid + 1, r, ll, rr, p);
    } else {
      Remove(t, x << 1, l, mid, ll, rr, p);
      Remove(t, x << 1 | 1, mid + 1, r, ll, rr, p);
    }
  };
  function<void(int, int, int, int, int, int, int)> Query = [&](int t, int x, int l, int r, int i, int ll, int rr) {
    if (t == 0) {
      while (true) {
        auto it = st_hor[x].lower_bound(make_pair(ll, -1));
        if (it != st_hor[x].end() && it->first <= rr) {
          int idx = it->second;
          qv.push_back(idx);
          Remove(0, 1, 0, k - 1, hor[idx][1], hor[idx][2], make_pair(hor[idx][0], idx));
        } else {
          break;
        }
      }
    } else {
      while (true) {
        auto it = st_ver[x].lower_bound(make_pair(ll, -1));
        if (it != st_ver[x].end() && it->first <= rr) {
          int idx = it->second;
          qv.push_back(idx);
          Remove(1, 1, 0, k - 1, ver[idx][1], ver[idx][2], make_pair(ver[idx][0], idx));
        } else {
          break;
        }
      }
    }
    if (l == r) {
      return;
    }
    int mid = l + r >> 1;
    if (i <= mid) {
      Query(t, x << 1, l, mid, i, ll, rr);
    } else {
      Query(t, x << 1 | 1, mid + 1, r, i, ll, rr);
    }
  };
  for (int i = 0; i < sh; i++) {
    if (dist[i] == -1) {
      Insert(0, 1, 0, k - 1, hor[i][1], hor[i][2], make_pair(hor[i][0], i));
    }
  }
  for (int i = 0; i < sv; i++) {
    if (dist[sh + i] == -1) {
      Insert(1, 1, 0, k - 1, ver[i][1], ver[i][2], make_pair(ver[i][0], i));
    }
  }
  for (int q = 0; q < (int) que.size(); q++) {
    int x = que[q];
    if (x < sh) {
      qv.clear();
      Query(1, 1, 0, k - 1, hor[x][0], hor[x][1], hor[x][2]);
      for (int i : qv) {
        dist[sh + i] = dist[x] + 1;
        que.push_back(sh + i);
      }
    } else {
      x -= sh;
      qv.clear();
      Query(0, 1, 0, k - 1, ver[x][0], ver[x][1], ver[x][2]);
      for (int i : qv) {
        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;
}

Compilation message

golf.cpp: In lambda function:
golf.cpp:210:17: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  210 |     int mid = l + r >> 1;
      |               ~~^~~
golf.cpp: In lambda function:
golf.cpp:229:17: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  229 |     int mid = l + r >> 1;
      |               ~~^~~
golf.cpp: In lambda function:
golf.cpp:266:17: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  266 |     int mid = l + r >> 1;
      |               ~~^~~

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 604 KB Output is correct
5 Correct 38 ms 1516 KB Output is correct
6 Correct 40 ms 1616 KB Output is correct
7 Correct 38 ms 1616 KB Output is correct
8 Correct 39 ms 1588 KB Output is correct
9 Correct 39 ms 1620 KB Output is correct
10 Correct 40 ms 1620 KB Output is correct
11 Correct 40 ms 1616 KB Output is correct
12 Correct 40 ms 1620 KB Output is correct
13 Correct 40 ms 1596 KB Output is correct
14 Correct 40 ms 1624 KB Output is correct
15 Correct 3 ms 860 KB Output is correct
16 Correct 7 ms 1260 KB Output is correct

Subtask #2
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 604 KB Output is correct
5 Correct 38 ms 1516 KB Output is correct
6 Correct 40 ms 1616 KB Output is correct
7 Correct 38 ms 1616 KB Output is correct
8 Correct 39 ms 1588 KB Output is correct
9 Correct 39 ms 1620 KB Output is correct
10 Correct 40 ms 1620 KB Output is correct
11 Correct 40 ms 1616 KB Output is correct
12 Correct 40 ms 1620 KB Output is correct
13 Correct 40 ms 1596 KB Output is correct
14 Correct 40 ms 1624 KB Output is correct
15 Correct 3 ms 860 KB Output is correct
16 Correct 7 ms 1260 KB Output is correct
17 Correct 42 ms 3408 KB Output is correct
18 Correct 41 ms 3152 KB Output is correct
19 Correct 42 ms 3412 KB Output is correct
20 Correct 42 ms 3364 KB Output is correct
21 Correct 43 ms 3384 KB Output is correct
22 Correct 43 ms 3412 KB Output is correct
23 Correct 44 ms 3408 KB Output is correct
24 Correct 43 ms 3412 KB Output is correct
25 Correct 43 ms 3372 KB Output is correct
26 Correct 43 ms 3400 KB Output is correct
27 Correct 4 ms 860 KB Output is correct
28 Correct 9 ms 1624 KB Output is correct
29 Correct 9 ms 1628 KB Output is correct

Subtask #3
0 / 70.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 604 KB Output is correct
5 Correct 38 ms 1516 KB Output is correct
6 Correct 40 ms 1616 KB Output is correct
7 Correct 38 ms 1616 KB Output is correct
8 Correct 39 ms 1588 KB Output is correct
9 Correct 39 ms 1620 KB Output is correct
10 Correct 40 ms 1620 KB Output is correct
11 Correct 40 ms 1616 KB Output is correct
12 Correct 40 ms 1620 KB Output is correct
13 Correct 40 ms 1596 KB Output is correct
14 Correct 40 ms 1624 KB Output is correct
15 Correct 3 ms 860 KB Output is correct
16 Correct 7 ms 1260 KB Output is correct
17 Correct 42 ms 3408 KB Output is correct
18 Correct 41 ms 3152 KB Output is correct
19 Correct 42 ms 3412 KB Output is correct
20 Correct 42 ms 3364 KB Output is correct
21 Correct 43 ms 3384 KB Output is correct
22 Correct 43 ms 3412 KB Output is correct
23 Correct 44 ms 3408 KB Output is correct
24 Correct 43 ms 3412 KB Output is correct
25 Correct 43 ms 3372 KB Output is correct
26 Correct 43 ms 3400 KB Output is correct
27 Correct 4 ms 860 KB Output is correct
28 Correct 9 ms 1624 KB Output is correct
29 Correct 9 ms 1628 KB Output is correct
30 Execution timed out 10072 ms 4456 KB Time limit exceeded
31 Halted 0 ms 0 KB -