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Submission #503142

# Submission time Handle Problem Language Result Execution time Memory
503142 2022-01-07T11:21:30 Z Pety Chessboard (IZhO18_chessboard) C++14
47 / 100
 2000 ms 9624 KB 
#include <bits/stdc++.h>

#define ll long long
#define ld long double

using namespace std;

const ll MOD = 1e9 + 7;
const ll INF = 1e9;
const int N = 1e5 + 2;

int n, sum[100002], k, lazy[400002], aint[400002];

struct query {
  int type, l, r;
  bool operator < (const query &other) {
    return type < other.type;
  }
};
vector<query>q[100002];

void build (int nod, int st, int dr) {
  aint[nod] = sum[dr] - (st > 0 ? sum[st - 1] : 0);
  if (st == dr)
    return;
  int mij = (st + dr) / 2;
  build(2 * nod, st, mij);
  build(2 * nod + 1, mij + 1, dr);
}

void push (int nod, int st, int dr) {
  if (lazy[nod] != -1) {
    if (st != dr) {
      lazy[2 * nod] = lazy[nod];
      lazy[2 * nod + 1] = lazy[nod];
    }
    if (lazy[nod] == 0)
      aint[nod] = sum[dr] - (st > 0 ? sum[st - 1] : 0);
    else
      aint[nod] = (dr - st + 1) - (sum[dr] - (st > 0 ? sum[st - 1] : 0));
  }
  lazy[nod] = -1;
}

void update (int nod, int st, int dr, int a, int b, int val) {
  push(nod, st, dr);
  if (a <= st && dr <= b) {
    if (val == 0)
      aint[nod] = sum[dr] - (st > 0 ? sum[st - 1] : 0);
    else
      aint[nod] = (dr - st + 1) - (sum[dr] - (st > 0 ? sum[st - 1] : 0));
    if (st != dr) {
      lazy[2 * nod] = val;
      lazy[2 * nod + 1] = val;
    }
    return;
  }
  int  mij = (st + dr) / 2;
  if (a <= mij)
    update(2 * nod, st, mij, a, b, val);
  else
    update(2 * nod + 1, mij + 1, dr, a, b, val);
  aint[nod] = aint[2 * nod] + aint[2 * nod + 1];
}


int main()
{
  ios_base::sync_with_stdio(false);
  cin.tie(0); cout.tie(0);
  cin >> n >> k;
  while (k--) {
    int x1, y1, x2, y2;
    cin >> x1 >> y1 >> x2 >> y2;
    x1--; y1--; x2--; y2--;
    q[x1].push_back({1, y1, y2});
    q[x2 + 1].push_back({0, y1, y2});
  }
  for (int i = 0; i < n; i++)
    sort(q[i].begin(), q[i].end());
  ll sol = 1ll * n * n;
  for (int l = 1; l < n; l++) {
    if (n % l == 0) {
      for (int i = 0; i < n; i++) {
        sum[i] = (i / l) % 2 + (i > 0 ? sum[i - 1] : 0);
      }
      ll nr = 0;
      for (int i = 1; i <= 4 * n; i++) {
        lazy[i] = -1;
      }
      build(1, 0, n - 1);
      for (int i = 0; i < n; i++) {
        for (auto it : q[i]) {
          if (it.type == 0) 
            update(1, 0, n - 1, it.l, it.r, 0);
          else
            update(1, 0, n - 1, it.l, it.r, 1);
        }
        if ((i / l) % 2)
          nr += n - aint[1];
        else
          nr += aint[1];
      }
      sol = min(sol, min(nr, 1l * n  * n - nr));
    }
  }
  cout << sol;
  return 0;
}

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2640 KB Output is correct
2 Correct 1 ms 2636 KB Output is correct
3 Correct 2 ms 2636 KB Output is correct
4 Correct 2 ms 2636 KB Output is correct
5 Correct 2 ms 2636 KB Output is correct
6 Correct 1 ms 2636 KB Output is correct
7 Correct 1 ms 2648 KB Output is correct
8 Correct 1 ms 2636 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 54 ms 6868 KB Output is correct
2 Correct 19 ms 3696 KB Output is correct
3 Correct 37 ms 7108 KB Output is correct
4 Correct 36 ms 4708 KB Output is correct
5 Correct 48 ms 6432 KB Output is correct
6 Correct 49 ms 5544 KB Output is correct
7 Correct 9 ms 3660 KB Output is correct
8 Correct 36 ms 5616 KB Output is correct
9 Correct 76 ms 7144 KB Output is correct
10 Correct 41 ms 5972 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2636 KB Output is correct
2 Correct 1 ms 2636 KB Output is correct
3 Correct 2 ms 2636 KB Output is correct
4 Correct 3 ms 2636 KB Output is correct
5 Correct 2 ms 2680 KB Output is correct
6 Correct 2 ms 2636 KB Output is correct
7 Correct 2 ms 2636 KB Output is correct
8 Correct 2 ms 2636 KB Output is correct
9 Correct 2 ms 2636 KB Output is correct
10 Correct 2 ms 2636 KB Output is correct
11 Correct 2 ms 2636 KB Output is correct
12 Correct 2 ms 2636 KB Output is correct
13 Correct 3 ms 2720 KB Output is correct
14 Correct 3 ms 2636 KB Output is correct
15 Correct 2 ms 2636 KB Output is correct

Subtask #4
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2636 KB Output is correct
2 Correct 1 ms 2636 KB Output is correct
3 Correct 2 ms 2636 KB Output is correct
4 Correct 3 ms 2636 KB Output is correct
5 Correct 2 ms 2680 KB Output is correct
6 Correct 2 ms 2636 KB Output is correct
7 Correct 2 ms 2636 KB Output is correct
8 Correct 2 ms 2636 KB Output is correct
9 Correct 2 ms 2636 KB Output is correct
10 Correct 2 ms 2636 KB Output is correct
11 Correct 2 ms 2636 KB Output is correct
12 Correct 2 ms 2636 KB Output is correct
13 Correct 3 ms 2720 KB Output is correct
14 Correct 3 ms 2636 KB Output is correct
15 Correct 2 ms 2636 KB Output is correct
16 Correct 27 ms 3660 KB Output is correct
17 Correct 44 ms 5948 KB Output is correct
18 Correct 99 ms 6036 KB Output is correct
19 Correct 587 ms 5912 KB Output is correct
20 Correct 692 ms 5916 KB Output is correct
21 Correct 45 ms 5964 KB Output is correct
22 Correct 3 ms 2636 KB Output is correct
23 Correct 81 ms 4340 KB Output is correct
24 Correct 90 ms 5972 KB Output is correct
25 Correct 19 ms 3020 KB Output is correct
26 Correct 59 ms 4692 KB Output is correct
27 Correct 101 ms 5744 KB Output is correct
28 Correct 99 ms 6008 KB Output is correct
29 Correct 20 ms 4044 KB Output is correct
30 Correct 5 ms 2764 KB Output is correct

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 54 ms 6868 KB Output is correct
2 Correct 19 ms 3696 KB Output is correct
3 Correct 37 ms 7108 KB Output is correct
4 Correct 36 ms 4708 KB Output is correct
5 Correct 48 ms 6432 KB Output is correct
6 Correct 49 ms 5544 KB Output is correct
7 Correct 9 ms 3660 KB Output is correct
8 Correct 36 ms 5616 KB Output is correct
9 Correct 76 ms 7144 KB Output is correct
10 Correct 41 ms 5972 KB Output is correct
11 Correct 2 ms 2636 KB Output is correct
12 Correct 1 ms 2636 KB Output is correct
13 Correct 2 ms 2636 KB Output is correct
14 Correct 3 ms 2636 KB Output is correct
15 Correct 2 ms 2680 KB Output is correct
16 Correct 2 ms 2636 KB Output is correct
17 Correct 2 ms 2636 KB Output is correct
18 Correct 2 ms 2636 KB Output is correct
19 Correct 2 ms 2636 KB Output is correct
20 Correct 2 ms 2636 KB Output is correct
21 Correct 2 ms 2636 KB Output is correct
22 Correct 2 ms 2636 KB Output is correct
23 Correct 3 ms 2720 KB Output is correct
24 Correct 3 ms 2636 KB Output is correct
25 Correct 2 ms 2636 KB Output is correct
26 Correct 27 ms 3660 KB Output is correct
27 Correct 44 ms 5948 KB Output is correct
28 Correct 99 ms 6036 KB Output is correct
29 Correct 587 ms 5912 KB Output is correct
30 Correct 692 ms 5916 KB Output is correct
31 Correct 45 ms 5964 KB Output is correct
32 Correct 3 ms 2636 KB Output is correct
33 Correct 81 ms 4340 KB Output is correct
34 Correct 90 ms 5972 KB Output is correct
35 Correct 19 ms 3020 KB Output is correct
36 Correct 59 ms 4692 KB Output is correct
37 Correct 101 ms 5744 KB Output is correct
38 Correct 99 ms 6008 KB Output is correct
39 Correct 20 ms 4044 KB Output is correct
40 Correct 5 ms 2764 KB Output is correct
41 Correct 976 ms 9044 KB Output is correct
42 Correct 178 ms 9412 KB Output is correct
43 Correct 474 ms 9068 KB Output is correct
44 Correct 182 ms 9360 KB Output is correct
45 Correct 97 ms 9624 KB Output is correct
46 Correct 1134 ms 9428 KB Output is correct
47 Correct 80 ms 9156 KB Output is correct
48 Correct 354 ms 9108 KB Output is correct
49 Correct 184 ms 9056 KB Output is correct
50 Execution timed out 2075 ms 9032 KB Time limit exceeded
51 Halted 0 ms 0 KB -

Subtask #6
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2640 KB Output is correct
2 Correct 1 ms 2636 KB Output is correct
3 Correct 2 ms 2636 KB Output is correct
4 Correct 2 ms 2636 KB Output is correct
5 Correct 2 ms 2636 KB Output is correct
6 Correct 1 ms 2636 KB Output is correct
7 Correct 1 ms 2648 KB Output is correct
8 Correct 1 ms 2636 KB Output is correct
9 Correct 54 ms 6868 KB Output is correct
10 Correct 19 ms 3696 KB Output is correct
11 Correct 37 ms 7108 KB Output is correct
12 Correct 36 ms 4708 KB Output is correct
13 Correct 48 ms 6432 KB Output is correct
14 Correct 49 ms 5544 KB Output is correct
15 Correct 9 ms 3660 KB Output is correct
16 Correct 36 ms 5616 KB Output is correct
17 Correct 76 ms 7144 KB Output is correct
18 Correct 41 ms 5972 KB Output is correct
19 Correct 2 ms 2636 KB Output is correct
20 Correct 1 ms 2636 KB Output is correct
21 Correct 2 ms 2636 KB Output is correct
22 Correct 3 ms 2636 KB Output is correct
23 Correct 2 ms 2680 KB Output is correct
24 Correct 2 ms 2636 KB Output is correct
25 Correct 2 ms 2636 KB Output is correct
26 Correct 2 ms 2636 KB Output is correct
27 Correct 2 ms 2636 KB Output is correct
28 Correct 2 ms 2636 KB Output is correct
29 Correct 2 ms 2636 KB Output is correct
30 Correct 2 ms 2636 KB Output is correct
31 Correct 3 ms 2720 KB Output is correct
32 Correct 3 ms 2636 KB Output is correct
33 Correct 2 ms 2636 KB Output is correct
34 Correct 27 ms 3660 KB Output is correct
35 Correct 44 ms 5948 KB Output is correct
36 Correct 99 ms 6036 KB Output is correct
37 Correct 587 ms 5912 KB Output is correct
38 Correct 692 ms 5916 KB Output is correct
39 Correct 45 ms 5964 KB Output is correct
40 Correct 3 ms 2636 KB Output is correct
41 Correct 81 ms 4340 KB Output is correct
42 Correct 90 ms 5972 KB Output is correct
43 Correct 19 ms 3020 KB Output is correct
44 Correct 59 ms 4692 KB Output is correct
45 Correct 101 ms 5744 KB Output is correct
46 Correct 99 ms 6008 KB Output is correct
47 Correct 20 ms 4044 KB Output is correct
48 Correct 5 ms 2764 KB Output is correct
49 Correct 976 ms 9044 KB Output is correct
50 Correct 178 ms 9412 KB Output is correct
51 Correct 474 ms 9068 KB Output is correct
52 Correct 182 ms 9360 KB Output is correct
53 Correct 97 ms 9624 KB Output is correct
54 Correct 1134 ms 9428 KB Output is correct
55 Correct 80 ms 9156 KB Output is correct
56 Correct 354 ms 9108 KB Output is correct
57 Correct 184 ms 9056 KB Output is correct
58 Execution timed out 2075 ms 9032 KB Time limit exceeded
59 Halted 0 ms 0 KB -