Submission #855846

#	Time	Username	Problem	Language	Result	Execution time	Memory
855846		Trisanu_Das	Chessboard (IZhO18_chessboard)	C++17	0 / 100	48 ms	4440 KiB

chessboard

#include <iostream>
#include <algorithm>
#include <climits>
#define int long long
using namespace std;
 
int f(int s, int a) {
	a %= s * 2;
	return min(a, s * 2 - a);
}
 
signed main() {
	int n, k, temp, ans;
	cin >> n >> k;
    int x1[n], y1[n], x2[n], y2[n];
	for (int i = 0; i < k; i++){
      cin >> x1[i] >> y1[i] >> x2[i] >> y2[i];
      --x1[i]; --y1[i];
    }
	ans = LLONG_MAX;
	for (int i = 1; i < n; i++)
		if (n % i == 0) {
			k = (n / i) * (n / i) / 2 * i * i;
			for (int j = 0; j < k; j++) temp += (f(i, x2[j]) - f(i, x1[j])) * (f(i, y2[j]) - f(i, y1[j]));
			ans = min(ans, min(temp, n * n - temp));
		}
	cout << ans << '\n';
}

Compilation message (stderr)

chessboard.cpp: In function 'int main()':
chessboard.cpp:24:37: warning: 'temp' may be used uninitialized in this function [-Wmaybe-uninitialized]
   24 |    for (int j = 0; j < k; j++) temp += (f(i, x2[j]) - f(i, x1[j])) * (f(i, y2[j]) - f(i, y1[j]));
      |                                ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 8
• Subtask 2: 0 / 8
• Subtask 3: 0 / 15
• Subtask 4: 0 / 16
• Subtask 5: 0 / 23
• Subtask 6: 0 / 30