Шахматы_new

#include <iostream>
#include <iomanip>
using namespace std;

const int n = 7;

int arr[n][n] =
{
    {0, 1, 0, 1, 0, 1, 0},
    {1, 0, 1, 0, 1, 0, 1},
    {0, 1, 0, 1, 0, 1, 0},
    {1, 0, 1, 0, 1, 0, 1},
    {0, 1, 0, 1, 0, 1, 0},
    {1, 0, 1, 0, 1, 0, 1},
    {0, 1, 0, 1, 0, 1, 0}
};

bool ok = true;

int main() {

    for (int i = 0; i < n; i++)
    {
        for (int j = 0; j < n; j++)
        {
            cout << setw(4) << arr[i][j];
        }
        cout << endl;
    }

    for (int i = n - 1; i > 0; i--)
    {
        for (int j = 1; j < n; j++)
        {
            if (arr[i - 1][j] == arr[i][j] || arr[i][j - 1] == arr[i][j])
            {
                ok = false;
                break;
            }
            if (arr[0][j - 1] == arr[0][j])
            {
                ok = false;
                break;
            }
        }
    }

    if (ok)
    {
        cout << endl << "yes";
    }
    else
    {
        cout << endl << "no";
    }
    return 0;
}