327-c.cpp

#include <bits/stdc++.h>
using namespace std;
int a[10][10];
bool m[10][10], n[10][10];
bool check(int x0, int x1, int y0, int y1)
{
    bool checka[10];
    memset(checka, 0, sizeof(checka));
    for (int i = x0; i <= x1; i++)
    {
        for (int j = y0; j <= y1; j++)
        {
            if (checka[a[i][j]])
                return 1;
            checka[a[i][j]] = 1;
        }
    }
    return 0;
}
int main()
{
    bool flags1 = 0;
    for (int i = 1; i <= 9; i++)
    {
        for (int j = 1; j <= 9; j++)
        {
            cin >> a[i][j];
            if (m[i][a[i][j]] || n[j][a[i][j]])
            {
                flags1 = 1;
            }
            m[i][a[i][j]] = n[j][a[i][j]] = 1;
        }
    }
    if (flags1)
    {
        cout << "No" << endl;
        system("pause");
        return 0;
    }
    bool flags2 = check(1, 3, 1, 3) || check(1, 3, 4, 6) || check(1, 3, 7, 9) || check(4, 6, 1, 3) || check(4, 6, 4, 6) || check(4, 6, 7, 9) || check(7, 9, 1, 3) || check(7, 9, 4, 6) || check(7, 9, 7, 9);
    if (flags2)
    {

        cout << "No" << endl;
        system("pause");
        return 0;
    }
    cout << "Yes" << endl;
    system("pause");
    return 0;
}