oj.uz

Submission #721116

# Submission time Handle Problem Language Result Execution time Memory
721116 2023-04-10T10:23:12 Z cig32 Chessboard (IZhO18_chessboard) C++17
100 / 100
 523 ms 5844 KB 
#include "bits/stdc++.h"
#define int long long
using namespace std;
const int MAXN = 1e5 + 10;
void solve(int tc) {
  int n,k;
  cin >> n>>k;
  int x1[k],y1[k],x2[k],y2[k];
  for(int i=0; i<k; i++) {
    cin >> x1[i] >> y1[i] >> x2[i] >> y2[i];
    x1[i]--; y1[i]--;
    x2[i]--; y2[i]--;
  }
  vector<int> prof;
  for(int i=1; i*i<=n; i++) {
    if(n%i == 0) {
      prof.push_back(i);
      if(i*i!=n && i!=1) prof.push_back(n/i);
    }
  }
  sort(prof.begin(), prof.end());
  int ans = 1e18;
  for(int s: prof) {
    int c[2] = {0, 0}; // number of black cells for each (i/S + j/S) mod 2
    for(int i=0; i<k; i++) {
      int type0 = 0;
      int type1 = 0;
      int l = y1[i], r = y2[i];
      if(l / (2*s) == r / (2*s)) {
        if(r % (2*s) < s) type0 += r-l+1;
        else if(l % (2*s) >= s) type0 += 0;
        else type0 += s - (l % (2*s));
      }
      else {
        if(l % (2*s) >= s) {
          int md = l % (2*s);
          l += 2*s - md;
        }
        else {
          int md = l % (2*s);
          type0 += s - md;
          l += 2*s - md;
        }
        if(r % (2*s) >= s) {
          int md = r % (2*s);
          r -= md+1;
          type0 += s;
        }
        else {
          int md = r % (2*s);
          r -= md+1;
          type0 += md+1;
        }
        type0 += (r-l+1) / 2;
      }
      type1 = y2[i]-y1[i]+1 - type0;
      l = x1[i], r = x2[i];
      int type2 = 0;
      int type3 = 0;
      if(l / (2*s) == r / (2*s)) {
        if(r % (2*s) < s) type2 += r-l+1;
        else if(l % (2*s) >= s) type2 += 0;
        else type2 += s - (l % (2*s));
      }
      else {
        if(l % (2*s) >= s) {
          int md = l % (2*s);
          l += 2*s - md;
        }
        else {
          int md = l % (2*s);
          type2 += s - md;
          l += 2*s - md;
        }
        if(r % (2*s) >= s) {
          int md = r % (2*s);
          r -= md+1;
          type2 += s;
        }
        else {
          int md = r % (2*s);
          r -= md+1;
          type2 += md+1;
        }
        type2 += (r-l+1) / 2;
      }
      type3 = x2[i]-x1[i]+1 - type2;
      //cout<<s<<" "<<type0<<" "<<type1<<" "<<type2<<" "<<type3<<"\n";
      int d = type0 * type2 + type1 * type3;
      c[0] += d;
      c[1] += (x2[i] - x1[i] + 1) * (y2[i] - y1[i] + 1) - d;
    }
    int t[2] = {0, 0};
    int nums = (n/s) * (n/s);
    t[0] = s*s * ((nums+1) / 2);
    t[1] = s*s * (nums / 2);
    ans = min(ans, abs(t[0] - c[0]) + c[1]);
    ans = min(ans, abs(t[1] - c[1]) + c[0]);
   // cout<<ans<<"\n";
  }
  cout << ans << "\n";
}
int32_t main() {
  ios::sync_with_stdio(0);
  cin.tie(0);
  int t=1; //cin>>t;
  for(int i=1; i<=t; i++)solve(i);
}

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 324 KB Output is correct
2 Correct 1 ms 320 KB Output is correct
3 Correct 0 ms 316 KB Output is correct
4 Correct 1 ms 320 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 320 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 39 ms 3652 KB Output is correct
2 Correct 7 ms 1096 KB Output is correct
3 Correct 15 ms 2424 KB Output is correct
4 Correct 17 ms 2600 KB Output is correct
5 Correct 20 ms 3284 KB Output is correct
6 Correct 18 ms 2132 KB Output is correct
7 Correct 3 ms 656 KB Output is correct
8 Correct 15 ms 2164 KB Output is correct
9 Correct 34 ms 5168 KB Output is correct
10 Correct 18 ms 3032 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 228 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct

Subtask #4
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 228 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 14 ms 1544 KB Output is correct
17 Correct 32 ms 4172 KB Output is correct
18 Correct 39 ms 4940 KB Output is correct
19 Correct 91 ms 4468 KB Output is correct
20 Correct 111 ms 4984 KB Output is correct
21 Correct 28 ms 4100 KB Output is correct
22 Correct 1 ms 320 KB Output is correct
23 Correct 23 ms 2268 KB Output is correct
24 Correct 33 ms 4532 KB Output is correct
25 Correct 5 ms 724 KB Output is correct
26 Correct 21 ms 2896 KB Output is correct
27 Correct 30 ms 3456 KB Output is correct
28 Correct 36 ms 4812 KB Output is correct
29 Correct 11 ms 1852 KB Output is correct
30 Correct 1 ms 340 KB Output is correct

Subtask #5
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 39 ms 3652 KB Output is correct
2 Correct 7 ms 1096 KB Output is correct
3 Correct 15 ms 2424 KB Output is correct
4 Correct 17 ms 2600 KB Output is correct
5 Correct 20 ms 3284 KB Output is correct
6 Correct 18 ms 2132 KB Output is correct
7 Correct 3 ms 656 KB Output is correct
8 Correct 15 ms 2164 KB Output is correct
9 Correct 34 ms 5168 KB Output is correct
10 Correct 18 ms 3032 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 228 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 1 ms 212 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 14 ms 1544 KB Output is correct
27 Correct 32 ms 4172 KB Output is correct
28 Correct 39 ms 4940 KB Output is correct
29 Correct 91 ms 4468 KB Output is correct
30 Correct 111 ms 4984 KB Output is correct
31 Correct 28 ms 4100 KB Output is correct
32 Correct 1 ms 320 KB Output is correct
33 Correct 23 ms 2268 KB Output is correct
34 Correct 33 ms 4532 KB Output is correct
35 Correct 5 ms 724 KB Output is correct
36 Correct 21 ms 2896 KB Output is correct
37 Correct 30 ms 3456 KB Output is correct
38 Correct 36 ms 4812 KB Output is correct
39 Correct 11 ms 1852 KB Output is correct
40 Correct 1 ms 340 KB Output is correct
41 Correct 110 ms 4804 KB Output is correct
42 Correct 43 ms 5412 KB Output is correct
43 Correct 54 ms 4820 KB Output is correct
44 Correct 50 ms 5312 KB Output is correct
45 Correct 41 ms 5660 KB Output is correct
46 Correct 110 ms 5428 KB Output is correct
47 Correct 31 ms 4948 KB Output is correct
48 Correct 53 ms 5120 KB Output is correct
49 Correct 63 ms 4828 KB Output is correct
50 Correct 457 ms 5320 KB Output is correct
51 Correct 471 ms 5644 KB Output is correct
52 Correct 415 ms 5280 KB Output is correct
53 Correct 463 ms 5580 KB Output is correct
54 Correct 422 ms 5216 KB Output is correct
55 Correct 523 ms 5816 KB Output is correct
56 Correct 401 ms 5064 KB Output is correct

Subtask #6
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 324 KB Output is correct
2 Correct 1 ms 320 KB Output is correct
3 Correct 0 ms 316 KB Output is correct
4 Correct 1 ms 320 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 320 KB Output is correct
9 Correct 39 ms 3652 KB Output is correct
10 Correct 7 ms 1096 KB Output is correct
11 Correct 15 ms 2424 KB Output is correct
12 Correct 17 ms 2600 KB Output is correct
13 Correct 20 ms 3284 KB Output is correct
14 Correct 18 ms 2132 KB Output is correct
15 Correct 3 ms 656 KB Output is correct
16 Correct 15 ms 2164 KB Output is correct
17 Correct 34 ms 5168 KB Output is correct
18 Correct 18 ms 3032 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 1 ms 228 KB Output is correct
21 Correct 1 ms 212 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 212 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 212 KB Output is correct
28 Correct 1 ms 212 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 1 ms 340 KB Output is correct
31 Correct 1 ms 340 KB Output is correct
32 Correct 1 ms 340 KB Output is correct
33 Correct 1 ms 340 KB Output is correct
34 Correct 14 ms 1544 KB Output is correct
35 Correct 32 ms 4172 KB Output is correct
36 Correct 39 ms 4940 KB Output is correct
37 Correct 91 ms 4468 KB Output is correct
38 Correct 111 ms 4984 KB Output is correct
39 Correct 28 ms 4100 KB Output is correct
40 Correct 1 ms 320 KB Output is correct
41 Correct 23 ms 2268 KB Output is correct
42 Correct 33 ms 4532 KB Output is correct
43 Correct 5 ms 724 KB Output is correct
44 Correct 21 ms 2896 KB Output is correct
45 Correct 30 ms 3456 KB Output is correct
46 Correct 36 ms 4812 KB Output is correct
47 Correct 11 ms 1852 KB Output is correct
48 Correct 1 ms 340 KB Output is correct
49 Correct 110 ms 4804 KB Output is correct
50 Correct 43 ms 5412 KB Output is correct
51 Correct 54 ms 4820 KB Output is correct
52 Correct 50 ms 5312 KB Output is correct
53 Correct 41 ms 5660 KB Output is correct
54 Correct 110 ms 5428 KB Output is correct
55 Correct 31 ms 4948 KB Output is correct
56 Correct 53 ms 5120 KB Output is correct
57 Correct 63 ms 4828 KB Output is correct
58 Correct 457 ms 5320 KB Output is correct
59 Correct 471 ms 5644 KB Output is correct
60 Correct 415 ms 5280 KB Output is correct
61 Correct 463 ms 5580 KB Output is correct
62 Correct 422 ms 5216 KB Output is correct
63 Correct 523 ms 5816 KB Output is correct
64 Correct 401 ms 5064 KB Output is correct
65 Correct 1 ms 212 KB Output is correct
66 Correct 1 ms 212 KB Output is correct
67 Correct 436 ms 5468 KB Output is correct
68 Correct 441 ms 5444 KB Output is correct
69 Correct 410 ms 4792 KB Output is correct
70 Correct 408 ms 5400 KB Output is correct
71 Correct 406 ms 5212 KB Output is correct
72 Correct 418 ms 5116 KB Output is correct
73 Correct 386 ms 4992 KB Output is correct
74 Correct 449 ms 5360 KB Output is correct
75 Correct 429 ms 5164 KB Output is correct
76 Correct 466 ms 5500 KB Output is correct
77 Correct 110 ms 5676 KB Output is correct
78 Correct 54 ms 5188 KB Output is correct
79 Correct 58 ms 4852 KB Output is correct
80 Correct 60 ms 5100 KB Output is correct
81 Correct 63 ms 4828 KB Output is correct
82 Correct 54 ms 5476 KB Output is correct
83 Correct 59 ms 5064 KB Output is correct
84 Correct 256 ms 5632 KB Output is correct
85 Correct 453 ms 5724 KB Output is correct
86 Correct 1 ms 320 KB Output is correct
87 Correct 1 ms 320 KB Output is correct
88 Correct 452 ms 5844 KB Output is correct
89 Correct 82 ms 1236 KB Output is correct
90 Correct 1 ms 212 KB Output is correct