제출 #290482

#제출 시각아이디문제언어결과실행 시간메모리
290482matheo_apdChessboard (IZhO18_chessboard)C++17
0 / 100
1 ms384 KiB
#include <bits/stdc++.h>
using namespace std;
#define maxn 105
int chess[maxn][maxn];
int main(){
	int n, k;
	cin >> n >> k;
	for(int i = 0; i < k; i++){
		int x, y;
		cin >> x >> y;
		cin >> x >> y; //8)
		chess[x][y] = 1;
	}
	int cont_errado = 0;
	for(int i = 1; i <= n; i++)
		for(int j = 1; j <= n; j++)
			if((i+j)%2 == chess[i][j]) cont_errado++;
	cout << min(cont_errado, n*n - cont_errado) << endl;
	return 0;
}
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