Submission #467244

#	Time	Username	Problem	Language	Result	Execution time	Memory
467244		levsog2004	Chessboard (IZhO18_chessboard)	C++14	0 / 100	76 ms	1240 KiB

chessboard

#include <iostream>
#include <iomanip>
#include <fstream>
#include <algorithm>
#include <cstring>
#include <string>
#include <vector>
#include <queue>
#include <deque>
#include <stack>
#include <cmath>
#include <list>
#include <set>
#include <map>
using namespace std;
typedef  long long ll;
const ll N = 2000004;
ll n, m, l, k, t, x,ans, y;
pair<ll, ll> a[N];
int check(int n, int m, int x, int y)
{
	x /= m;
	y /= m;
	if (x + y % 2 == 0)
	{
		return 1;
	}
	else
		return 0;

}
int main() 
{
	cin >> n >> m;
	for (int i = 0; i < m; ++i)
	{
		cin >> a[i].first >> a[i].second;
		cin >> x >> x;
	}
	x = 0;
	ans = n * n / 2;
	if(m!=0)
	for (int i = 1; i*i <= n; ++i)
	{
		if (n%i == 0)
		{
			for (int j = 0; j < m; ++j)
			{
				x += check(n, i, a[j].first-1, a[j].second-1);
			}
			ans = min(x, n*n - x);
		}
		x = 0;
	}
	cout << ans << endl;
	return 0;
}

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