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Submission #505815

# Submission time Handle Problem Language Result Execution time Memory
505815 2022-01-11T08:27:27 Z Mazaalai Chessboard (IZhO18_chessboard) C++17
70 / 100
 178 ms 2676 KB 
#include <bits/stdc++.h>
#define pb push_back
using namespace std;
using ll = long long;
const ll INF = 1e18;
const int N = 1e5 + 5;
ll n, m, ans = INF;
vector <int> divs;
ll dp[N];
void add(int num) {
	if (num == n) return;
	divs.pb(num);
	ll len = n / num;
	dp[num] = (len * len + 1) / 2 * num * num;
}
signed main() {
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	// freopen("in.txt", "r", stdin);
	// freopen("out.txt", "w", stdout);
	cin >> n >> m;
	for (int i = 1; i * i <= n; i++) {
		if (n % i != 0) continue;
		add(i);
		if (i * i != n) add(n / i);
	}
	for (int i = 0; i < m; i++) {
		int a, b; cin >> a >> b >> a >> b;
		// cout << a << " " << b << ": ";
		for (auto& num : divs) {
			int col = ((a + num - 1) / num + (b + num - 1) / num)&1; // 0 ? black : white
			// cout << num << ',' << col << ' ';
			dp[num] += col == 1 ? 1 : -1;
		}
		// cout << '\n';
	}
	for (auto& num : divs) {
		// cout << num << ": " << dp[num] << '\n';
		ans = min(ans, min(dp[num], n * n - dp[num]));
	}
	cout << ans << '\n';
}

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 320 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 0 ms 204 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 17 ms 1728 KB Output is correct
2 Correct 5 ms 592 KB Output is correct
3 Correct 12 ms 1248 KB Output is correct
4 Correct 12 ms 1076 KB Output is correct
5 Correct 19 ms 1604 KB Output is correct
6 Correct 11 ms 1080 KB Output is correct
7 Correct 3 ms 472 KB Output is correct
8 Correct 11 ms 1128 KB Output is correct
9 Correct 26 ms 2336 KB Output is correct
10 Correct 14 ms 1484 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 328 KB Output is correct
3 Correct 0 ms 320 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 0 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 0 ms 324 KB Output is correct
10 Correct 0 ms 204 KB Output is correct
11 Correct 0 ms 332 KB Output is correct
12 Correct 0 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct

Subtask #4
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 328 KB Output is correct
3 Correct 0 ms 320 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 0 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 0 ms 324 KB Output is correct
10 Correct 0 ms 204 KB Output is correct
11 Correct 0 ms 332 KB Output is correct
12 Correct 0 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 8 ms 716 KB Output is correct
17 Correct 20 ms 1584 KB Output is correct
18 Correct 26 ms 1836 KB Output is correct
19 Correct 46 ms 1700 KB Output is correct
20 Correct 49 ms 1852 KB Output is correct
21 Correct 19 ms 1564 KB Output is correct
22 Correct 1 ms 312 KB Output is correct
23 Correct 12 ms 956 KB Output is correct
24 Correct 22 ms 1704 KB Output is correct
25 Correct 3 ms 460 KB Output is correct
26 Correct 14 ms 1216 KB Output is correct
27 Correct 20 ms 1348 KB Output is correct
28 Correct 26 ms 1732 KB Output is correct
29 Correct 8 ms 844 KB Output is correct
30 Correct 2 ms 332 KB Output is correct

Subtask #5
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 17 ms 1728 KB Output is correct
2 Correct 5 ms 592 KB Output is correct
3 Correct 12 ms 1248 KB Output is correct
4 Correct 12 ms 1076 KB Output is correct
5 Correct 19 ms 1604 KB Output is correct
6 Correct 11 ms 1080 KB Output is correct
7 Correct 3 ms 472 KB Output is correct
8 Correct 11 ms 1128 KB Output is correct
9 Correct 26 ms 2336 KB Output is correct
10 Correct 14 ms 1484 KB Output is correct
11 Correct 0 ms 204 KB Output is correct
12 Correct 0 ms 328 KB Output is correct
13 Correct 0 ms 320 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 0 ms 332 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 0 ms 324 KB Output is correct
20 Correct 0 ms 204 KB Output is correct
21 Correct 0 ms 332 KB Output is correct
22 Correct 0 ms 332 KB Output is correct
23 Correct 1 ms 332 KB Output is correct
24 Correct 1 ms 332 KB Output is correct
25 Correct 1 ms 332 KB Output is correct
26 Correct 8 ms 716 KB Output is correct
27 Correct 20 ms 1584 KB Output is correct
28 Correct 26 ms 1836 KB Output is correct
29 Correct 46 ms 1700 KB Output is correct
30 Correct 49 ms 1852 KB Output is correct
31 Correct 19 ms 1564 KB Output is correct
32 Correct 1 ms 312 KB Output is correct
33 Correct 12 ms 956 KB Output is correct
34 Correct 22 ms 1704 KB Output is correct
35 Correct 3 ms 460 KB Output is correct
36 Correct 14 ms 1216 KB Output is correct
37 Correct 20 ms 1348 KB Output is correct
38 Correct 26 ms 1732 KB Output is correct
39 Correct 8 ms 844 KB Output is correct
40 Correct 2 ms 332 KB Output is correct
41 Correct 46 ms 2244 KB Output is correct
42 Correct 29 ms 2500 KB Output is correct
43 Correct 34 ms 2240 KB Output is correct
44 Correct 27 ms 2376 KB Output is correct
45 Correct 28 ms 2592 KB Output is correct
46 Correct 50 ms 2504 KB Output is correct
47 Correct 29 ms 2332 KB Output is correct
48 Correct 38 ms 2348 KB Output is correct
49 Correct 27 ms 2248 KB Output is correct
50 Correct 171 ms 2548 KB Output is correct
51 Correct 172 ms 2676 KB Output is correct
52 Correct 157 ms 2424 KB Output is correct
53 Correct 175 ms 2676 KB Output is correct
54 Correct 170 ms 2436 KB Output is correct
55 Correct 178 ms 2672 KB Output is correct
56 Correct 161 ms 2428 KB Output is correct

Subtask #6
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 320 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 0 ms 204 KB Output is correct
9 Correct 17 ms 1728 KB Output is correct
10 Correct 5 ms 592 KB Output is correct
11 Correct 12 ms 1248 KB Output is correct
12 Correct 12 ms 1076 KB Output is correct
13 Correct 19 ms 1604 KB Output is correct
14 Correct 11 ms 1080 KB Output is correct
15 Correct 3 ms 472 KB Output is correct
16 Correct 11 ms 1128 KB Output is correct
17 Correct 26 ms 2336 KB Output is correct
18 Correct 14 ms 1484 KB Output is correct
19 Correct 0 ms 204 KB Output is correct
20 Correct 0 ms 328 KB Output is correct
21 Correct 0 ms 320 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 332 KB Output is correct
24 Correct 1 ms 332 KB Output is correct
25 Correct 0 ms 332 KB Output is correct
26 Correct 1 ms 332 KB Output is correct
27 Correct 0 ms 324 KB Output is correct
28 Correct 0 ms 204 KB Output is correct
29 Correct 0 ms 332 KB Output is correct
30 Correct 0 ms 332 KB Output is correct
31 Correct 1 ms 332 KB Output is correct
32 Correct 1 ms 332 KB Output is correct
33 Correct 1 ms 332 KB Output is correct
34 Correct 8 ms 716 KB Output is correct
35 Correct 20 ms 1584 KB Output is correct
36 Correct 26 ms 1836 KB Output is correct
37 Correct 46 ms 1700 KB Output is correct
38 Correct 49 ms 1852 KB Output is correct
39 Correct 19 ms 1564 KB Output is correct
40 Correct 1 ms 312 KB Output is correct
41 Correct 12 ms 956 KB Output is correct
42 Correct 22 ms 1704 KB Output is correct
43 Correct 3 ms 460 KB Output is correct
44 Correct 14 ms 1216 KB Output is correct
45 Correct 20 ms 1348 KB Output is correct
46 Correct 26 ms 1732 KB Output is correct
47 Correct 8 ms 844 KB Output is correct
48 Correct 2 ms 332 KB Output is correct
49 Correct 46 ms 2244 KB Output is correct
50 Correct 29 ms 2500 KB Output is correct
51 Correct 34 ms 2240 KB Output is correct
52 Correct 27 ms 2376 KB Output is correct
53 Correct 28 ms 2592 KB Output is correct
54 Correct 50 ms 2504 KB Output is correct
55 Correct 29 ms 2332 KB Output is correct
56 Correct 38 ms 2348 KB Output is correct
57 Correct 27 ms 2248 KB Output is correct
58 Correct 171 ms 2548 KB Output is correct
59 Correct 172 ms 2676 KB Output is correct
60 Correct 157 ms 2424 KB Output is correct
61 Correct 175 ms 2676 KB Output is correct
62 Correct 170 ms 2436 KB Output is correct
63 Correct 178 ms 2672 KB Output is correct
64 Correct 161 ms 2428 KB Output is correct
65 Correct 1 ms 204 KB Output is correct
66 Incorrect 1 ms 204 KB Output isn't correct
67 Halted 0 ms 0 KB -