Submission #70997552

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Source Code Expand

#include <bits/stdc++.h>

using namespace std;

class rect {
private:
  int64_t l, r, d, u;

  bool _adj(const rect &other) const {
    return other.l - r == 1 && max(d, other.d) <= min(u, other.u) || other.d - u == 1 && max(l, other.l) <= min(r, other.r);
  }

public:
  rect(int64_t l, int64_t r, int64_t d, int64_t u) : l(l), r(r), d(d), u(u) {}

  optional<pair<rect, rect>> split_x(int64_t a, int64_t b) {
    if (r < a) {
      return u -= b, d -= b, nullopt;
    }
    if (l >= a) {
      return u += b, d += b, nullopt;
    }
    rect left = {l, a - 1, d, u}, right = {a, r, d, u};
    return make_pair((left.split_x(a, b), left), (right.split_x(a, b), right));
  }
  optional<pair<rect, rect>> split_y(int64_t a, int64_t b) {
    if (u < a) {
      return l -= b, r -= b, nullopt;
    }
    if (d >= a) {
      return l += b, r += b, nullopt;
    }
    rect down = {l, r, d, a - 1}, up = {l, r, a, u};
    return make_pair((down.split_y(a, b), down), (up.split_y(a, b), up));
  }

  bool adj(const rect &other) const { return _adj(other) || other._adj(*this); }
  int64_t ar() const { return (r - l + 1) * (u - d + 1); }

  bool operator==(const rect &other) const = default;
};

int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(nullptr);

  int n, x, y;
  cin >> n >> x >> y;
  vector<rect> rects;
  rects.emplace_back(0, x - 1, 0, y - 1);

  for (int i = 0; i < n; ++i) {
    vector<rect> rem, add;
    char ch;
    cin >> ch;
    int a, b;
    cin >> a >> b;
    for (rect &i : rects) {
      auto t = (i.*(ch == 'X' ? &rect::split_x : &rect::split_y))(a, b);
      if (t) {
        rem.push_back(i);
        add.push_back(t->first), add.push_back(t->second);
      }
    }
    for (rect &i : rem) {
      rects.erase(find(rects.begin(), rects.end(), i));
    }
    for (rect &i : add) {
      rects.push_back(i);
    }
  }

  n = rects.size();
  vector<bool> vis(n);
  vector<int64_t> ans;
  auto dfs = [&](auto &&self, int u) -> int64_t {
    vis[u] = true;
    int64_t ans = rects[u].ar();
    for (int i = 0; i < n; ++i) {
      if (!vis[i] && rects[u].adj(rects[i])) {
        ans += self(self, i);
      }
    }
    return ans;
  };
  for (int i = 0; i < n; ++i) {
    if (!vis[i]) {
      ans.push_back(dfs(dfs, i));
    }
  }

  sort(ans.begin(), ans.end());
  cout << ans.size() << '\n';
  for (int64_t &i : ans) {
    cout << i << ' ';
  }
  cout << '\n';
}

Submission Info

Compile Error

./Main.cpp: In member function 'bool rect::_adj(const rect&) const':
./Main.cpp:10:29: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   10 |     return other.l - r == 1 && max(d, other.d) <= min(u, other.u) || other.d - u == 1 && max(l, other.l) <= min(r, other.r);
      |            ~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Judge Result