#include <stdio.h>
void printSudoku(char board[9][9]) 
{
    for (int r = 0; r < 9; r++) 
    {
        if (r % 3 == 0 && r != 0) 
        {
            printf("---------------------\n");
        }
        for (int c = 0; c < 9; c++) 
        {
            if (c % 3 == 0 && c != 0) 
            {
                printf("| ");
            }
            printf("%c ", board[r][c]);
        }
        printf("\n");
    }
}

int main() {
    char board[9][9] = 
    {
        {'5', '3', '4', '6', '7', '8', '9', '1', '2'},
        {'6', '7', '2', '1', '9', '5', '3', '4', '8'},
        {'1', '9', '8', '3', '4', '2', '5', '6', '7'},
        {'8', '5', '9', '7', '6', '1', '4', '2', '3'},
        {'4', '2', '6', '8', '5', '3', '7', '9', '1'},
        {'7', '1', '3', '9', '2', '4', '8', '5', '6'},
        {'9', '6', '1', '5', '3', '7', '2', '8', '4'},
        {'2', '8', '7', '4', '1', '9', '6', '3', '5'},
        {'3', '4', '5', '2', '8', '6', '1', '7', '9'}
    };
    printSudoku(board);
    return 0;
}