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Submission #503141

# Submission time Handle Problem Language Result Execution time Memory
503141 2022-01-07T11:19:52 Z Pety Chessboard (IZhO18_chessboard) C++14
47 / 100
 2000 ms 11904 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 2636 KB Output is correct
2 Correct 2 ms 2636 KB Output is correct
3 Correct 1 ms 2636 KB Output is correct
4 Correct 1 ms 2636 KB Output is correct
5 Correct 1 ms 2636 KB Output is correct
6 Correct 1 ms 2636 KB Output is correct
7 Correct 1 ms 2636 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 57 ms 6968 KB Output is correct
2 Correct 15 ms 4084 KB Output is correct
3 Correct 40 ms 7976 KB Output is correct
4 Correct 29 ms 5456 KB Output is correct
5 Correct 49 ms 7748 KB Output is correct
6 Correct 32 ms 6372 KB Output is correct
7 Correct 8 ms 3836 KB Output is correct
8 Correct 37 ms 6368 KB Output is correct
9 Correct 74 ms 9244 KB Output is correct
10 Correct 42 ms 7144 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 2636 KB Output is correct
6 Correct 3 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 2644 KB Output is correct
10 Correct 1 ms 2628 KB Output is correct
11 Correct 2 ms 2636 KB Output is correct
12 Correct 2 ms 2636 KB Output is correct
13 Correct 2 ms 2636 KB Output is correct
14 Correct 2 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 2636 KB Output is correct
6 Correct 3 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 2644 KB Output is correct
10 Correct 1 ms 2628 KB Output is correct
11 Correct 2 ms 2636 KB Output is correct
12 Correct 2 ms 2636 KB Output is correct
13 Correct 2 ms 2636 KB Output is correct
14 Correct 2 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 6032 KB Output is correct
18 Correct 96 ms 6020 KB Output is correct
19 Correct 557 ms 5908 KB Output is correct
20 Correct 617 ms 5904 KB Output is correct
21 Correct 43 ms 5964 KB Output is correct
22 Correct 4 ms 2636 KB Output is correct
23 Correct 80 ms 4304 KB Output is correct
24 Correct 90 ms 6016 KB Output is correct
25 Correct 17 ms 3020 KB Output is correct
26 Correct 55 ms 4688 KB Output is correct
27 Correct 106 ms 5748 KB Output is correct
28 Correct 91 ms 5844 KB Output is correct
29 Correct 19 ms 4096 KB Output is correct
30 Correct 6 ms 2764 KB Output is correct

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 57 ms 6968 KB Output is correct
2 Correct 15 ms 4084 KB Output is correct
3 Correct 40 ms 7976 KB Output is correct
4 Correct 29 ms 5456 KB Output is correct
5 Correct 49 ms 7748 KB Output is correct
6 Correct 32 ms 6372 KB Output is correct
7 Correct 8 ms 3836 KB Output is correct
8 Correct 37 ms 6368 KB Output is correct
9 Correct 74 ms 9244 KB Output is correct
10 Correct 42 ms 7144 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 2636 KB Output is correct
16 Correct 3 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 2644 KB Output is correct
20 Correct 1 ms 2628 KB Output is correct
21 Correct 2 ms 2636 KB Output is correct
22 Correct 2 ms 2636 KB Output is correct
23 Correct 2 ms 2636 KB Output is correct
24 Correct 2 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 6032 KB Output is correct
28 Correct 96 ms 6020 KB Output is correct
29 Correct 557 ms 5908 KB Output is correct
30 Correct 617 ms 5904 KB Output is correct
31 Correct 43 ms 5964 KB Output is correct
32 Correct 4 ms 2636 KB Output is correct
33 Correct 80 ms 4304 KB Output is correct
34 Correct 90 ms 6016 KB Output is correct
35 Correct 17 ms 3020 KB Output is correct
36 Correct 55 ms 4688 KB Output is correct
37 Correct 106 ms 5748 KB Output is correct
38 Correct 91 ms 5844 KB Output is correct
39 Correct 19 ms 4096 KB Output is correct
40 Correct 6 ms 2764 KB Output is correct
41 Correct 869 ms 11028 KB Output is correct
42 Correct 177 ms 11716 KB Output is correct
43 Correct 437 ms 11028 KB Output is correct
44 Correct 181 ms 11552 KB Output is correct
45 Correct 93 ms 11904 KB Output is correct
46 Correct 968 ms 11664 KB Output is correct
47 Correct 80 ms 11204 KB Output is correct
48 Correct 308 ms 11292 KB Output is correct
49 Correct 159 ms 11092 KB Output is correct
50 Execution timed out 2064 ms 11124 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 2636 KB Output is correct
2 Correct 2 ms 2636 KB Output is correct
3 Correct 1 ms 2636 KB Output is correct
4 Correct 1 ms 2636 KB Output is correct
5 Correct 1 ms 2636 KB Output is correct
6 Correct 1 ms 2636 KB Output is correct
7 Correct 1 ms 2636 KB Output is correct
8 Correct 1 ms 2636 KB Output is correct
9 Correct 57 ms 6968 KB Output is correct
10 Correct 15 ms 4084 KB Output is correct
11 Correct 40 ms 7976 KB Output is correct
12 Correct 29 ms 5456 KB Output is correct
13 Correct 49 ms 7748 KB Output is correct
14 Correct 32 ms 6372 KB Output is correct
15 Correct 8 ms 3836 KB Output is correct
16 Correct 37 ms 6368 KB Output is correct
17 Correct 74 ms 9244 KB Output is correct
18 Correct 42 ms 7144 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 2636 KB Output is correct
24 Correct 3 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 2644 KB Output is correct
28 Correct 1 ms 2628 KB Output is correct
29 Correct 2 ms 2636 KB Output is correct
30 Correct 2 ms 2636 KB Output is correct
31 Correct 2 ms 2636 KB Output is correct
32 Correct 2 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 6032 KB Output is correct
36 Correct 96 ms 6020 KB Output is correct
37 Correct 557 ms 5908 KB Output is correct
38 Correct 617 ms 5904 KB Output is correct
39 Correct 43 ms 5964 KB Output is correct
40 Correct 4 ms 2636 KB Output is correct
41 Correct 80 ms 4304 KB Output is correct
42 Correct 90 ms 6016 KB Output is correct
43 Correct 17 ms 3020 KB Output is correct
44 Correct 55 ms 4688 KB Output is correct
45 Correct 106 ms 5748 KB Output is correct
46 Correct 91 ms 5844 KB Output is correct
47 Correct 19 ms 4096 KB Output is correct
48 Correct 6 ms 2764 KB Output is correct
49 Correct 869 ms 11028 KB Output is correct
50 Correct 177 ms 11716 KB Output is correct
51 Correct 437 ms 11028 KB Output is correct
52 Correct 181 ms 11552 KB Output is correct
53 Correct 93 ms 11904 KB Output is correct
54 Correct 968 ms 11664 KB Output is correct
55 Correct 80 ms 11204 KB Output is correct
56 Correct 308 ms 11292 KB Output is correct
57 Correct 159 ms 11092 KB Output is correct
58 Execution timed out 2064 ms 11124 KB Time limit exceeded
59 Halted 0 ms 0 KB -