oj.uz

Submission #204413

# Submission time Handle Problem Language Result Execution time Memory
204413 2020-02-25T17:03:03 Z ADJA Rectangles (IOI19_rect) C++14
40 / 100
 5000 ms 122956 KB 
#include "rect.h"
 
#include <iostream>
#include <cstdio>
#include <cstdlib>
#include <vector>
#include <set>
#include <map>
#include <algorithm>
#include <bitset>
#include <cmath>
#include <queue>
#include <stack>
#include <string>
 
#define sz(x) (int) x.size()
#define all(x) x.begin(), x.end()
 
using namespace std;

const int MAXN = 2500;

int n, m;
int a[MAXN][MAXN];
int ok[MAXN][MAXN];
int mxc[MAXN];

int one[MAXN][MAXN], zero[MAXN][MAXN];

long long solveSix() {
  for (int j = m - 1; j >= 0; j--) {
    for (int i = 0; i < n; i++) {
      if (a[i][j] == 0) {
        one[i][j] = 0;
        zero[i][j] = 1 + zero[i][j + 1];
      } else {
        zero[i][j] = 0;
        one[i][j] = 1 + one[i][j + 1];
      }
    }
  }

  long long ans = 0;
  for (int j = 0; j + 1 < m; j++) {
    int prevOne = -1, mnZero = 123123, mxZero = -1;
    for (int i = 0; i < n; i++) {
      if (a[i][j] == 1 && one[i][j + 1] == 0) {
        mxZero = max(mxZero, zero[i][j + 1]);
        mnZero = min(mnZero, zero[i][j + 1]);
      } else {
        int curOne = one[i][j + 1];
        if (prevOne != -1 && mxZero != -1 && mxZero == mnZero) {
          int zeroLen = mnZero;
          if (j + zeroLen + 1 < m && prevOne >= zeroLen && curOne >= zeroLen) {
            ans++;
            // cerr << i << " " << j << endl;
          }
        }
        prevOne = curOne;
        mnZero = 123123, mxZero = -1;
      }
    }
  }

  return ans;
}

long long count_rectangles(std::vector<std::vector<int> > A) {
  n = sz(A); m = sz(A[0]);
  for (int i = 0; i < n; i++) {
    for (int j = 0; j < m; j++) {
      a[i][j] = A[i][j];
    }
  }

  bool isSix = true;
  for (int i = 0; i < n; i++) {
    for (int j = 0; j < m; j++) {
      if (a[i][j] > 1) {
        isSix = false;
      }
    }
  }
  if (isSix) {
    return solveSix();
  }

  long long ans = 0;
  vector<int> cols;
  for (int i = 0; i < m; i++) {
    cols.push_back(i);
  }
  random_shuffle(all(cols));

  for (int coli = 0; coli < min(200, m); coli++) {
    int col = cols[coli];
    if (col == m - 1) {
      continue;
    }
    for (int i = 0; i < n; i++) {
      for (int j = col; j < m; j++) {
        ok[i][j] = 0;
      }
    }
    for (int i = 0; i < n; i++) {
      int mx = -1;
      for (int j = col + 1; j < m; j++) {
        if (a[i][col] > mx && a[i][j] > mx) {
          ok[i][j] = 1;
        }
        if (a[i][j] > mx) {
          mx = a[i][j];
        }
      }
    }
    for (int i = 0; i < n; i++) {
      for (int j = col + 1; j < m; j++) {
        if (ok[i][j]) {
          ok[i][j] = 1 + ok[i - 1][j];
        }
      }
    }

    for (int row = 0; row + 1 < n; row++) {
      for (int j = col + 1; j < m; j++) {
        mxc[j] = -1;
      }
      for (int row2 = row + 1; row2 < n; row2++) {
        bool good = true;
        for (int col2 = col + 1; col2 + 1 < m; col2++) {
          if (!(a[row][col2] > mxc[col2] && a[row2][col2] > mxc[col2])) {
            good = false;
          }
          if (good && row2 - 1 > row && ok[row2 - 1][col2 + 1] >= row2 - row - 1) {
            ans++;
          }
          if (a[row2][col2] > mxc[col2]) {
            mxc[col2] = a[row2][col2];
          }
        }
      }
    }
  }

  return ans;
}

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 376 KB Output is correct
2 Correct 5 ms 508 KB Output is correct
3 Correct 5 ms 504 KB Output is correct
4 Correct 5 ms 632 KB Output is correct
5 Correct 6 ms 632 KB Output is correct
6 Correct 6 ms 664 KB Output is correct
7 Correct 5 ms 504 KB Output is correct
8 Correct 5 ms 508 KB Output is correct
9 Correct 6 ms 632 KB Output is correct
10 Correct 6 ms 504 KB Output is correct
11 Correct 6 ms 508 KB Output is correct
12 Correct 6 ms 508 KB Output is correct
13 Correct 5 ms 256 KB Output is correct
14 Correct 5 ms 376 KB Output is correct
15 Correct 5 ms 504 KB Output is correct
16 Correct 5 ms 376 KB Output is correct
17 Correct 5 ms 376 KB Output is correct
18 Correct 5 ms 376 KB Output is correct
19 Correct 5 ms 760 KB Output is correct
20 Correct 5 ms 760 KB Output is correct
21 Correct 5 ms 376 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 376 KB Output is correct
2 Correct 5 ms 508 KB Output is correct
3 Correct 5 ms 504 KB Output is correct
4 Correct 5 ms 632 KB Output is correct
5 Correct 6 ms 632 KB Output is correct
6 Correct 6 ms 664 KB Output is correct
7 Correct 5 ms 504 KB Output is correct
8 Correct 5 ms 508 KB Output is correct
9 Correct 6 ms 632 KB Output is correct
10 Correct 6 ms 504 KB Output is correct
11 Correct 6 ms 508 KB Output is correct
12 Correct 6 ms 508 KB Output is correct
13 Correct 5 ms 256 KB Output is correct
14 Correct 5 ms 376 KB Output is correct
15 Correct 5 ms 504 KB Output is correct
16 Correct 5 ms 376 KB Output is correct
17 Correct 28 ms 1144 KB Output is correct
18 Correct 28 ms 1144 KB Output is correct
19 Correct 28 ms 1016 KB Output is correct
20 Correct 34 ms 1120 KB Output is correct
21 Correct 42 ms 1016 KB Output is correct
22 Correct 41 ms 1016 KB Output is correct
23 Correct 38 ms 1016 KB Output is correct
24 Correct 15 ms 1016 KB Output is correct
25 Correct 5 ms 376 KB Output is correct
26 Correct 5 ms 376 KB Output is correct
27 Correct 5 ms 760 KB Output is correct
28 Correct 5 ms 760 KB Output is correct
29 Correct 5 ms 376 KB Output is correct

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 376 KB Output is correct
2 Correct 5 ms 508 KB Output is correct
3 Correct 5 ms 504 KB Output is correct
4 Correct 5 ms 632 KB Output is correct
5 Correct 6 ms 632 KB Output is correct
6 Correct 6 ms 664 KB Output is correct
7 Correct 5 ms 504 KB Output is correct
8 Correct 5 ms 508 KB Output is correct
9 Correct 6 ms 632 KB Output is correct
10 Correct 6 ms 504 KB Output is correct
11 Correct 6 ms 508 KB Output is correct
12 Correct 6 ms 508 KB Output is correct
13 Correct 5 ms 256 KB Output is correct
14 Correct 5 ms 376 KB Output is correct
15 Correct 5 ms 504 KB Output is correct
16 Correct 5 ms 376 KB Output is correct
17 Correct 28 ms 1144 KB Output is correct
18 Correct 28 ms 1144 KB Output is correct
19 Correct 28 ms 1016 KB Output is correct
20 Correct 34 ms 1120 KB Output is correct
21 Correct 42 ms 1016 KB Output is correct
22 Correct 41 ms 1016 KB Output is correct
23 Correct 38 ms 1016 KB Output is correct
24 Correct 15 ms 1016 KB Output is correct
25 Correct 847 ms 2624 KB Output is correct
26 Correct 847 ms 2552 KB Output is correct
27 Correct 821 ms 2624 KB Output is correct
28 Correct 920 ms 2680 KB Output is correct
29 Correct 1123 ms 2680 KB Output is correct
30 Correct 1147 ms 2680 KB Output is correct
31 Correct 1053 ms 2680 KB Output is correct
32 Correct 984 ms 2680 KB Output is correct
33 Correct 5 ms 376 KB Output is correct
34 Correct 5 ms 376 KB Output is correct
35 Correct 5 ms 760 KB Output is correct
36 Correct 5 ms 760 KB Output is correct
37 Correct 5 ms 376 KB Output is correct

Subtask #4
0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 376 KB Output is correct
2 Correct 5 ms 508 KB Output is correct
3 Correct 5 ms 504 KB Output is correct
4 Correct 5 ms 632 KB Output is correct
5 Correct 6 ms 632 KB Output is correct
6 Correct 6 ms 664 KB Output is correct
7 Correct 5 ms 504 KB Output is correct
8 Correct 5 ms 508 KB Output is correct
9 Correct 6 ms 632 KB Output is correct
10 Correct 6 ms 504 KB Output is correct
11 Correct 6 ms 508 KB Output is correct
12 Correct 6 ms 508 KB Output is correct
13 Correct 5 ms 256 KB Output is correct
14 Correct 5 ms 376 KB Output is correct
15 Correct 5 ms 504 KB Output is correct
16 Correct 5 ms 376 KB Output is correct
17 Correct 28 ms 1144 KB Output is correct
18 Correct 28 ms 1144 KB Output is correct
19 Correct 28 ms 1016 KB Output is correct
20 Correct 34 ms 1120 KB Output is correct
21 Correct 42 ms 1016 KB Output is correct
22 Correct 41 ms 1016 KB Output is correct
23 Correct 38 ms 1016 KB Output is correct
24 Correct 15 ms 1016 KB Output is correct
25 Correct 847 ms 2624 KB Output is correct
26 Correct 847 ms 2552 KB Output is correct
27 Correct 821 ms 2624 KB Output is correct
28 Correct 920 ms 2680 KB Output is correct
29 Correct 1123 ms 2680 KB Output is correct
30 Correct 1147 ms 2680 KB Output is correct
31 Correct 1053 ms 2680 KB Output is correct
32 Correct 984 ms 2680 KB Output is correct
33 Execution timed out 5073 ms 13708 KB Time limit exceeded
34 Halted 0 ms 0 KB -

Subtask #5
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 9 ms 504 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 376 KB Output is correct
2 Correct 291 ms 59000 KB Output is correct
3 Correct 633 ms 122360 KB Output is correct
4 Correct 638 ms 122744 KB Output is correct
5 Correct 637 ms 122800 KB Output is correct
6 Correct 269 ms 60920 KB Output is correct
7 Correct 553 ms 119800 KB Output is correct
8 Correct 583 ms 122956 KB Output is correct
9 Correct 5 ms 376 KB Output is correct
10 Correct 5 ms 376 KB Output is correct
11 Correct 5 ms 760 KB Output is correct
12 Correct 5 ms 760 KB Output is correct
13 Correct 5 ms 376 KB Output is correct

Subtask #7
0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 376 KB Output is correct
2 Correct 5 ms 508 KB Output is correct
3 Correct 5 ms 504 KB Output is correct
4 Correct 5 ms 632 KB Output is correct
5 Correct 6 ms 632 KB Output is correct
6 Correct 6 ms 664 KB Output is correct
7 Correct 5 ms 504 KB Output is correct
8 Correct 5 ms 508 KB Output is correct
9 Correct 6 ms 632 KB Output is correct
10 Correct 6 ms 504 KB Output is correct
11 Correct 6 ms 508 KB Output is correct
12 Correct 6 ms 508 KB Output is correct
13 Correct 5 ms 256 KB Output is correct
14 Correct 5 ms 376 KB Output is correct
15 Correct 5 ms 504 KB Output is correct
16 Correct 5 ms 376 KB Output is correct
17 Correct 28 ms 1144 KB Output is correct
18 Correct 28 ms 1144 KB Output is correct
19 Correct 28 ms 1016 KB Output is correct
20 Correct 34 ms 1120 KB Output is correct
21 Correct 42 ms 1016 KB Output is correct
22 Correct 41 ms 1016 KB Output is correct
23 Correct 38 ms 1016 KB Output is correct
24 Correct 15 ms 1016 KB Output is correct
25 Correct 847 ms 2624 KB Output is correct
26 Correct 847 ms 2552 KB Output is correct
27 Correct 821 ms 2624 KB Output is correct
28 Correct 920 ms 2680 KB Output is correct
29 Correct 1123 ms 2680 KB Output is correct
30 Correct 1147 ms 2680 KB Output is correct
31 Correct 1053 ms 2680 KB Output is correct
32 Correct 984 ms 2680 KB Output is correct
33 Execution timed out 5073 ms 13708 KB Time limit exceeded
34 Halted 0 ms 0 KB -