oj.uz

Submission #143726

# Submission time Handle Problem Language Result Execution time Memory
143726 2019-08-15T01:12:54 Z Kanon Rectangles (IOI19_rect) C++14
0 / 100
 15 ms 4344 KB 
#include <bits/stdc++.h>

using namespace std;

#define range(i, m, n) for(int i = m; i < n; i++)
#define husk(i, m, n) for(int i = m; i > n; i--)

const int N = 2505;

vector<bitset<N>> bs(N);

struct sp {
  bitset<N> st;
  sp(){};
  void add(int ss) {
    st[ss] = 1;
  }
  int pos(int ss) {
    return (st & bs[ss]).count();
  }
  sp operator ^ (const sp &a) const {
    sp res;
    res.st = st & a.st;
    return res;
  }
};

long long count_rectangles(vector<vector<int>> a) {
  range(i, 0, N) range(j, 0, i) bs[i][j] = 1;
  int m = a.front().size();
  int n = a.size();
  auto pos = [&] (vector<int> cur) {
    int s = cur.size();
    vector<pair<int, int>> res;
    vector<int> st;
    range(i, 0, s) {
      while(st.size() && cur[st.back()] <= cur[i]) {
        if(st.back() < i - 1) res.emplace_back(st.back() + 1, i - 1);
        int b = st.back();
        st.pop_back();
        if(cur[b] == cur[i]) goto A;
      }
      if(st.size() && st.back() < i - 1) res.emplace_back(st.back() + 1, i - 1);
      A:;
      st.push_back(i);
    }
    return res;
  };
  vector<vector<sp>> cur(n, vector<sp>(m));
  range(i, 0, n) {
    vector<pair<int, int>> ss = pos(a[i]);
    for(auto j : ss) {
      cur[i][j.second].add(j.second - j.first);
    }
  }
  long long res = 0;
  vector<vector<pair<int, int>>> to(n, vector<pair<int, int>> (n, make_pair(-2, -2)));
  range(i, 0, m) {
    vector<int> psy(n);
    range(j, 0, n) psy[j] = a[j][i];
    vector<pair<int, int>> ss = pos(psy);
    int sz = ss.size();
    vector<sp> dp(sz);
    vector<int> pr(n, -1);
    range(j, 0, sz) {
      int p = ss[j].second;
      dp[j] = cur[p][i];
      while(p >= ss[j].first) {
        if(~pr[p]) {
          dp[j] = dp[j] ^ dp[pr[p]];
          p = ss[pr[p]].first - 1;
        } else {
          dp[j] = dp[j] ^ cur[p][i];
          p--;
        }
      }
      pr[ss[j].second] = j;
      int l = to[ss[j].first][ss[j].second].second == i - 1 ? to[ss[j].first][ss[j].second].first : i;
      if(l == i) to[ss[j].first][ss[j].second] = make_pair(i, i);
      to[ss[j].first][ss[j].second].second = i;
      res += dp[j].pos(j - l + 1);
    }
  }
  return res;
}

Subtask #1
0 / 8.0

# Verdict Execution time Memory Grader output
1 Runtime error 12 ms 2168 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #2
0 / 7.0

# Verdict Execution time Memory Grader output
1 Runtime error 12 ms 2168 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #3
0 / 12.0

# Verdict Execution time Memory Grader output
1 Runtime error 12 ms 2168 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #4
0 / 22.0

# Verdict Execution time Memory Grader output
1 Runtime error 12 ms 2168 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #5
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 15 ms 4344 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 13.0

# Verdict Execution time Memory Grader output
1 Runtime error 11 ms 2040 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #7
0 / 28.0

# Verdict Execution time Memory Grader output
1 Runtime error 12 ms 2168 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -