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Submission #1107764

# Submission time Handle Problem Language Result Execution time Memory
1107764 2024-11-02T05:00:36 Z stdfloat Chessboard (IZhO18_chessboard) C++17
70 / 100
 125 ms 4300 KB 
#include <bits/stdc++.h>
using namespace std;

using ll = long long;

#define ff	first
#define ss	second
#define pii	pair<int, int>

int main() {
	ios::sync_with_stdio(false); cin.tie(nullptr);

	int n, k;
	cin >> n >> k;

	pii p1[k], p2[k];
	for (int i = 0; i < k; i++) {
		cin >> p1[i].ff >> p1[i].ss >> p2[i].ff >> p2[i].ss;
		p1[i].ff--; p1[i].ss--; p2[i].ff--; p2[i].ss--;
	}

	ll ans = LLONG_MAX;
	for (int ii = 1; ii * ii <= n; ii++) {
		if (n % ii) continue;

		for (auto i : {ii, n / ii}) {
			if (i == n) continue;

			int x = n / i;
			ll cnt1 = ((ll)((x + 1) >> 1) * ((x + 1) >> 1) + (ll)(x >> 1) * (x >> 1)) * i * i, cnt2 = ((ll)((x + 1) >> 1) * (x >> 1) + (ll)(x >> 1) * ((x + 1) >> 1)) * i * i;
			
			for (int j = 0; j < k; j++) {
				if (((p1[j].ff / i) & 1) == ((p1[j].ss / i) & 1)) {
					cnt1--; cnt2++;
				}
				else {
					cnt1++; cnt2--;
				}
			}
		
			ans = min({ans, cnt1, cnt2});
		}
	}

	cout << ans;
}

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 1 ms 336 KB Output is correct
7 Correct 1 ms 336 KB Output is correct
8 Correct 1 ms 336 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 2704 KB Output is correct
2 Correct 5 ms 848 KB Output is correct
3 Correct 9 ms 1872 KB Output is correct
4 Correct 10 ms 1872 KB Output is correct
5 Correct 12 ms 2444 KB Output is correct
6 Correct 9 ms 1616 KB Output is correct
7 Correct 3 ms 592 KB Output is correct
8 Correct 9 ms 1616 KB Output is correct
9 Correct 21 ms 3920 KB Output is correct
10 Correct 17 ms 2384 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 1 ms 336 KB Output is correct
7 Correct 1 ms 464 KB Output is correct
8 Correct 1 ms 336 KB Output is correct
9 Correct 1 ms 336 KB Output is correct
10 Correct 1 ms 336 KB Output is correct
11 Correct 1 ms 336 KB Output is correct
12 Correct 1 ms 336 KB Output is correct
13 Correct 1 ms 336 KB Output is correct
14 Correct 1 ms 336 KB Output is correct
15 Correct 1 ms 336 KB Output is correct

Subtask #4
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 1 ms 336 KB Output is correct
7 Correct 1 ms 464 KB Output is correct
8 Correct 1 ms 336 KB Output is correct
9 Correct 1 ms 336 KB Output is correct
10 Correct 1 ms 336 KB Output is correct
11 Correct 1 ms 336 KB Output is correct
12 Correct 1 ms 336 KB Output is correct
13 Correct 1 ms 336 KB Output is correct
14 Correct 1 ms 336 KB Output is correct
15 Correct 1 ms 336 KB Output is correct
16 Correct 6 ms 1104 KB Output is correct
17 Correct 18 ms 2896 KB Output is correct
18 Correct 23 ms 3604 KB Output is correct
19 Correct 38 ms 3152 KB Output is correct
20 Correct 41 ms 3424 KB Output is correct
21 Correct 17 ms 2868 KB Output is correct
22 Correct 1 ms 336 KB Output is correct
23 Correct 11 ms 1748 KB Output is correct
24 Correct 19 ms 3152 KB Output is correct
25 Correct 3 ms 592 KB Output is correct
26 Correct 17 ms 2256 KB Output is correct
27 Correct 16 ms 2384 KB Output is correct
28 Correct 20 ms 3408 KB Output is correct
29 Correct 7 ms 1360 KB Output is correct
30 Correct 1 ms 336 KB Output is correct

Subtask #5
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 2704 KB Output is correct
2 Correct 5 ms 848 KB Output is correct
3 Correct 9 ms 1872 KB Output is correct
4 Correct 10 ms 1872 KB Output is correct
5 Correct 12 ms 2444 KB Output is correct
6 Correct 9 ms 1616 KB Output is correct
7 Correct 3 ms 592 KB Output is correct
8 Correct 9 ms 1616 KB Output is correct
9 Correct 21 ms 3920 KB Output is correct
10 Correct 17 ms 2384 KB Output is correct
11 Correct 1 ms 336 KB Output is correct
12 Correct 1 ms 336 KB Output is correct
13 Correct 1 ms 336 KB Output is correct
14 Correct 1 ms 336 KB Output is correct
15 Correct 1 ms 336 KB Output is correct
16 Correct 1 ms 336 KB Output is correct
17 Correct 1 ms 464 KB Output is correct
18 Correct 1 ms 336 KB Output is correct
19 Correct 1 ms 336 KB Output is correct
20 Correct 1 ms 336 KB Output is correct
21 Correct 1 ms 336 KB Output is correct
22 Correct 1 ms 336 KB Output is correct
23 Correct 1 ms 336 KB Output is correct
24 Correct 1 ms 336 KB Output is correct
25 Correct 1 ms 336 KB Output is correct
26 Correct 6 ms 1104 KB Output is correct
27 Correct 18 ms 2896 KB Output is correct
28 Correct 23 ms 3604 KB Output is correct
29 Correct 38 ms 3152 KB Output is correct
30 Correct 41 ms 3424 KB Output is correct
31 Correct 17 ms 2868 KB Output is correct
32 Correct 1 ms 336 KB Output is correct
33 Correct 11 ms 1748 KB Output is correct
34 Correct 19 ms 3152 KB Output is correct
35 Correct 3 ms 592 KB Output is correct
36 Correct 17 ms 2256 KB Output is correct
37 Correct 16 ms 2384 KB Output is correct
38 Correct 20 ms 3408 KB Output is correct
39 Correct 7 ms 1360 KB Output is correct
40 Correct 1 ms 336 KB Output is correct
41 Correct 36 ms 3520 KB Output is correct
42 Correct 25 ms 4084 KB Output is correct
43 Correct 28 ms 3664 KB Output is correct
44 Correct 22 ms 4088 KB Output is correct
45 Correct 24 ms 4176 KB Output is correct
46 Correct 39 ms 3920 KB Output is correct
47 Correct 20 ms 3664 KB Output is correct
48 Correct 25 ms 3664 KB Output is correct
49 Correct 21 ms 3664 KB Output is correct
50 Correct 111 ms 3920 KB Output is correct
51 Correct 119 ms 4248 KB Output is correct
52 Correct 125 ms 3920 KB Output is correct
53 Correct 118 ms 4168 KB Output is correct
54 Correct 108 ms 3920 KB Output is correct
55 Correct 122 ms 4300 KB Output is correct
56 Correct 105 ms 3656 KB Output is correct

Subtask #6
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 1 ms 336 KB Output is correct
7 Correct 1 ms 336 KB Output is correct
8 Correct 1 ms 336 KB Output is correct
9 Correct 15 ms 2704 KB Output is correct
10 Correct 5 ms 848 KB Output is correct
11 Correct 9 ms 1872 KB Output is correct
12 Correct 10 ms 1872 KB Output is correct
13 Correct 12 ms 2444 KB Output is correct
14 Correct 9 ms 1616 KB Output is correct
15 Correct 3 ms 592 KB Output is correct
16 Correct 9 ms 1616 KB Output is correct
17 Correct 21 ms 3920 KB Output is correct
18 Correct 17 ms 2384 KB Output is correct
19 Correct 1 ms 336 KB Output is correct
20 Correct 1 ms 336 KB Output is correct
21 Correct 1 ms 336 KB Output is correct
22 Correct 1 ms 336 KB Output is correct
23 Correct 1 ms 336 KB Output is correct
24 Correct 1 ms 336 KB Output is correct
25 Correct 1 ms 464 KB Output is correct
26 Correct 1 ms 336 KB Output is correct
27 Correct 1 ms 336 KB Output is correct
28 Correct 1 ms 336 KB Output is correct
29 Correct 1 ms 336 KB Output is correct
30 Correct 1 ms 336 KB Output is correct
31 Correct 1 ms 336 KB Output is correct
32 Correct 1 ms 336 KB Output is correct
33 Correct 1 ms 336 KB Output is correct
34 Correct 6 ms 1104 KB Output is correct
35 Correct 18 ms 2896 KB Output is correct
36 Correct 23 ms 3604 KB Output is correct
37 Correct 38 ms 3152 KB Output is correct
38 Correct 41 ms 3424 KB Output is correct
39 Correct 17 ms 2868 KB Output is correct
40 Correct 1 ms 336 KB Output is correct
41 Correct 11 ms 1748 KB Output is correct
42 Correct 19 ms 3152 KB Output is correct
43 Correct 3 ms 592 KB Output is correct
44 Correct 17 ms 2256 KB Output is correct
45 Correct 16 ms 2384 KB Output is correct
46 Correct 20 ms 3408 KB Output is correct
47 Correct 7 ms 1360 KB Output is correct
48 Correct 1 ms 336 KB Output is correct
49 Correct 36 ms 3520 KB Output is correct
50 Correct 25 ms 4084 KB Output is correct
51 Correct 28 ms 3664 KB Output is correct
52 Correct 22 ms 4088 KB Output is correct
53 Correct 24 ms 4176 KB Output is correct
54 Correct 39 ms 3920 KB Output is correct
55 Correct 20 ms 3664 KB Output is correct
56 Correct 25 ms 3664 KB Output is correct
57 Correct 21 ms 3664 KB Output is correct
58 Correct 111 ms 3920 KB Output is correct
59 Correct 119 ms 4248 KB Output is correct
60 Correct 125 ms 3920 KB Output is correct
61 Correct 118 ms 4168 KB Output is correct
62 Correct 108 ms 3920 KB Output is correct
63 Correct 122 ms 4300 KB Output is correct
64 Correct 105 ms 3656 KB Output is correct
65 Correct 1 ms 336 KB Output is correct
66 Incorrect 1 ms 336 KB Output isn't correct
67 Halted 0 ms 0 KB -